Updated 2026-07-30 — Verified facts: Uwell Caliburn G5 battery is 1600mAh (not ~1600mAh). XROS 6 remains 1800mAh / 3A / SSS 2.0. New cluster pages: XROS PRO 2 vs Argus G3 · Why pods leak / SSS 2.0 · Sweet juice pod life · XROS 5 vs Caliburn G4 (scheduled) · MTL ecosystem pillar.
For adult smokers and vapers of legal age only.
The VAPORESSO XROS 6 and the Uwell Caliburn G5 are the two most recommended MTL pod kits of 2026, and they're priced within a few dollars of each other. Both are excellent devices — but they make different trade-offs, and depending on how you vape, one of them is clearly the better buy. Here's the full spec-by-spec comparison.
Specs at a Glance
| Spec | VAPORESSO XROS 6 | Uwell Caliburn G5 |
|---|---|---|
| Battery | 1800mAh | 1600mAh |
| Fast charging | 3A — 50% in 10 minutes | 2A (USB-C) |
| Max output | 30W | 35W |
| Pod capacity | 3ml (2ml TPD) | 3ml (2ml CRC/TPD) |
| Pod resistances | 0.6Ω / 0.8Ω / 1.0Ω / 1.2Ω | 0.4Ω / 0.6Ω / 0.9Ω / 1.2Ω |
| Leak protection | SSS 2.0 triple-seal | Standard pod sealing |
| Flavor tech | COREX 3.0 | Pro-FOCS 4.0 |
| Pod ecosystem | Universal XROS pods (all XROS devices) | GPP / GPP Alpha pods (G3, G4, G5) |
| Pod prime time | 60s Smart Prime | ~5 min manual soak |
| Airflow | Adjustable | Adjustable top airflow |
| Price | $35.90 | ~$39.99 typical retail |
Battery and Charging: XROS 6 Wins
This is the biggest practical difference between the two. The XROS 6 carries a 1800mAh battery against the G5's 1600mAh — about 12% more capacity — but the real gap is charging speed. The XROS 6's 3A fast charging takes it to 50% in roughly 10 minutes. The G5 charges at 2A and needs closer to an hour for a full cycle.
In daily terms: forget to charge overnight, and the XROS 6 recovers half a day's vaping while you make coffee. The G5 leaves you tethered to a cable. If you've ever had a pod die at the worst moment, this alone can settle the choice.
Power and Draw: A Split Decision
The Caliburn G5 pushes up to 35W with its 0.4Ω GPP pod (sold separately in most kits), against the XROS 6's 30W ceiling. If you want the warmest, loosest restricted-DTL draw possible from a stick pod, the G5 has the edge on paper.
For the classic MTL draw that former smokers actually use these devices for, the two are effectively tied — both auto-adjust output to the installed pod, both offer adjustable airflow from tight cigarette-style to a looser pull. The XROS 6's 0.8Ω and 1.0Ω pods produce a notably consistent draw from full battery down to the last bar, thanks to COREX 3.0 output stabilization.
Leaking: XROS 6 Wins Clearly
Pod leaking is the most common complaint in every vape community, and it's where VAPORESSO has invested most visibly. The XROS 6's SSS 2.0 (Self-adaptive Sealing System) triple-seals the pod against pocket heat, pressure changes and overnight storage on its side. In our testing it stayed dry through all of it.
The G5's GPP Alpha pods are improved over previous Caliburn generations, but Uwell doesn't make an equivalent sealing claim, and the updated pods' smaller wicking holes are a mitigation rather than a sealed system. If you carry your vape in a pocket or bag all day, the XROS 6 is the safer bet.
Pods and Running Costs: XROS 6 Wins on Ecosystem
Both companies run a shared pod platform. Uwell's GPP pods fit the G3, G4 and G5. VAPORESSO's universal XROS pods fit every XROS device ever made — fourteen devices and counting, from the original XROS to the XROS 6 and XROS PRO 2.
That matters twice: pods are easier to find and cheaper per unit (a 4-pack of XROS pods covers over a month of typical use), and your pod stash survives every future device upgrade. The XROS 6 also primes new pods in 60 seconds via Smart Prime; with the G5 you should still wait around five minutes after filling a fresh pod.
Flavor Testing Notes
We ran both devices on identical liquids — a 10mg fruit salt and a 12mg tobacco salt — through a full pod life each. Fresh out of the box, the two are closer than fan debates suggest: the G5's Pro-FOCS 4.0 produces a slightly brighter top note on fruits, while COREX 3.0 on the XROS 6 renders tobacco and dessert profiles with a touch more body. Where they separate is week two: the XROS 6's pod held its profile noticeably longer before the flavor started flattening, and its output stabilization kept the draw consistent below 30% battery, where the G5 softened slightly on its included 0.6Ω pod. Neither device produces a bad draw at any point — but if you keep pods in service until they genuinely die, the XROS 6 gives you more good days per pod.
Design and Extras
The G5 counters with a 0.85" display and triple-tap smart control — genuinely nice touches, with wattage shown on screen and two output modes (Waves/Storm). The XROS 6 keeps things simpler with an LED indicator and leans on its core hardware advantages instead. Both are draw-activated, both feel premium in hand; the G5 is a few grams lighter (65g), the XROS 6 slightly slimmer in profile.
Real-World Scenarios: A Week With Each Device
Specs only tell half the story, so here's how the differences play out across a normal week.
The morning rush. You wake up to a dead device. With the XROS 6, ten minutes on the charger while you shower gets you to 50% — enough for the full workday. With the G5, the same ten minutes buys you a couple of hours; you'll be topping up at your desk.
The pocket test. Both devices ride in a jeans pocket next to keys all week. The XROS 6's SSS 2.0 seals showed no seepage in our run; the G5 stayed mostly dry but built up more condensation in the airflow after warm days — not a leak, but you'll taste the gurgle and want to flick it clear.
The refill moment. Both are top-fill and painless. The difference is what happens next: the XROS 6's Smart Prime lets you vape about a minute after filling a brand-new pod; with a fresh GPP pod you should still wait several minutes or risk a scorched wick — the most common way beginners kill a pod on day one.
The weekend away. Two days, no charger. The XROS 6's 1800mAh comfortably covers a light-to-moderate weekend; the G5's 1600mAh usually makes it too, but with less margin — heavy users will hit the red bar by Sunday afternoon on either, and only the XROS 6 recovers meaningfully from a borrowed 15-minute charge.
Who Should NOT Buy Each Device
Honesty cuts both ways, so: skip the XROS 6 if you specifically want on-device wattage readouts, output mode switching, or the loosest possible restricted-DTL draw at 35W — the G5 genuinely serves tinkerers better. Skip the Caliburn G5 if you've ever been burned by pod leaks, if fast top-up charging matters to your routine, or if you're building a long-term pod stash — the XROS ecosystem is wider, cheaper and more future-proof.
Cost of Ownership Over a Year
Assume moderate use: one pod every 10 days, so roughly 37 pods a year. XROS pods in a 4-pack work out meaningfully cheaper per pod than GPP Alpha pods at typical retail, and the XROS 6 itself costs a few dollars less up front. Over twelve months the total gap lands around $25–40 in the XROS 6's favor — roughly a month of e-liquid for free. Not decisive on its own, but combined with the hardware advantages it compounds the verdict below.
Verdict: Which Should You Buy?
- Buy the XROS 6 if you want the fastest charging in the category, the best leak protection, a bigger battery, and the cheapest long-term pod ecosystem. For most MTL vapers — especially ex-smokers — it's the better daily device, and it costs less.
- Buy the Caliburn G5 if you specifically want 35W output with a 0.4Ω pod and an on-device display, and you don't mind slower charging and buying into the GPP pod range.
Still deciding? See how the XROS 6 stacks up against the rest of the family in our XROS series collection, or compare it with the OXVA Xlim Pro 3 in our next head-to-head.
Frequently Asked Questions
Is the XROS 6 better than the Caliburn G5?
For most MTL vapers, yes. The XROS 6 has a larger battery (1800mAh vs 1600mAh), much faster 3A charging (50% in 10 minutes), SSS 2.0 triple-seal leak protection, and a universal pod ecosystem — at a lower price. The Caliburn G5's advantages are its 35W max output and on-device display.
Does the Caliburn G5 charge faster than the XROS 6?
No. The XROS 6 charges at 3A and reaches 50% in about 10 minutes; the Caliburn G5 charges at 2A (5V/2A USB-C) and takes roughly an hour for a full charge.
Which leaks less, the XROS 6 or the Caliburn G5?
The XROS 6. Its SSS 2.0 triple-seal system is specifically engineered against pocket heat, pressure changes and side storage. The G5's updated GPP Alpha pods improve on older Caliburns but don't carry an equivalent sealed-system design.
Are XROS 6 pods compatible with other devices?
Yes — XROS pods are universal across the entire XROS series, including the XROS 6, XROS PRO 2, XROS 5 family and all earlier XROS devices.
