Leo Park
Cross-Brand Analyst at VapesOnlineShop
Published February 2026 · Updated February 2026
⚔️ Cross-Brand Comparison · 2026
Adjust MyRusher 40K vs Flum UT Bar 50K — Performance Control vs Dual-Flavor Longevity
Two fundamentally different approaches to "premium disposable." MyRusher bets on power customization with three modes, the biggest battery in its class, and a transparent tank. Flum UT Bar bets on dual-flavor switching with two independent tanks, 50K puffs, and a squishy stress-relief body. This comparison breaks down where each device wins and who each one is built for.
Spec-by-Spec Comparison
| Spec | MyRusher 40K | Flum UT Bar 50K | Winner |
|---|---|---|---|
| Max Puffs | 40,000 (Normal) | 50,000 (Eco) | Flum |
| E-Liquid | 20 mL (single tank) | Dual tanks (total varies) | Draw |
| Battery | 1,000 mAh | 760 mAh | MyRusher |
| Power Modes | 3 (Normal / Rush / Turbo) | 2 (Eco / Turbo) | MyRusher |
| Flavor System | Single flavor per device | Dual-tank, switchable | Flum |
| Total Flavors | 10 | 40 (25 dual + 15 single) | Flum |
| Coil | Dual mesh | Dual mesh (per tank) | Draw |
| Transparent Tank | ✅ Yes | ❌ No | MyRusher |
| Adjustable Airflow | ✅ Slider | ✅ Click control | MyRusher |
| Display | Color LED with animation | HD screen, dual tank levels | Draw |
| Charge Time | ~50 min | ~45–60 min | Draw |
| Special Feature | Aroma Boost button | Squishy stress-relief back | Preference |
| VOS Price | $20.99 | $22.99 | MyRusher |
| Cost per 1K Puffs | ~$0.52 | ~$0.46 | Flum |
Score: MyRusher wins 5 categories, Flum wins 4, with 4 draws. The numbers tell a story of two devices built for different priorities rather than direct competition.
Where MyRusher Wins
Battery that actually lasts. The 1,000 mAh battery is 32% larger than Flum's 760 mAh. In practice, MyRusher runs a full day on Normal mode without charging. Flum's dual-tank system places more demand on its smaller battery, meaning you'll charge it more often despite having a higher total puff count.
Three power modes vs two. MyRusher's Normal/Rush/Turbo system gives you a middle gear (Rush) that Flum's Eco/Turbo system lacks. Rush mode is genuinely useful — it boosts flavor aroma and warmth without the aggressive juice consumption of Turbo. It's the mode most MyRusher users settle on as their daily driver.
Transparent tank. Being able to see your juice level at a glance is a small feature with big daily impact. No dry hits, no guesswork. Flum's HD screen shows estimated e-liquid levels digitally, which works but isn't as immediately intuitive as physically seeing the juice.
Smoother airflow control. MyRusher's sliding airflow lever allows continuous, fine-grained adjustment. Flum uses a click-based airflow system that gives you discrete steps. If you care about dialing in exactly the right draw resistance, MyRusher's approach is more precise.
Where Flum UT Bar Wins
50K puffs and sheer longevity. In Eco mode, the UT Bar delivers 50,000 puffs — 25% more than MyRusher's max. If you prioritize device longevity and hate buying new devices frequently, Flum stretches further. At ~$0.46 per 1,000 puffs vs MyRusher's ~$0.52, it's also slightly cheaper per puff.
Dual-flavor system is genuinely innovative. Two independent tanks with separate mesh coils means zero flavor cross-contamination. You can switch between two completely different flavors with a tap, or blend them for custom combinations. MyRusher commits you to one flavor per device — variety requires buying multiple units.
40 flavors vs 10. Flum offers 25 dual-flavor combos plus 15 single-flavor options — a massive selection compared to MyRusher's 10. If finding your perfect flavor is important, Flum gives you far more territory to explore.
The stress-relief body. Flum's squishy back panel seems gimmicky until you use it. The soft, liquid-filled pouch provides genuine tactile feedback that becomes surprisingly addictive during breaks. It's a small ergonomic detail that no competitor has matched.
Who Should Buy Which
Buy MyRusher 40K if you...
→ Want control over vapor intensity and power
→ Prefer longer battery life per charge cycle
→ Like seeing your juice level physically
→ Value fine-grained airflow adjustment
→ Already know which flavor you want
→ Are part of the broader Adjust ecosystem
→ Prefer longer battery life per charge cycle
→ Like seeing your juice level physically
→ Value fine-grained airflow adjustment
→ Already know which flavor you want
→ Are part of the broader Adjust ecosystem
Buy Flum UT Bar 50K if you...
→ Want maximum puffs per device
→ Love switching between two flavors
→ Prefer the biggest flavor selection
→ Value cost-per-puff efficiency
→ Like the dual-tank innovation
→ Want a fidget-friendly body design
→ Love switching between two flavors
→ Prefer the biggest flavor selection
→ Value cost-per-puff efficiency
→ Like the dual-tank innovation
→ Want a fidget-friendly body design
FAQ
— Reviewed by VapesOnlineShop editorial team.