Feature	Vuse Alto	Vaporesso XROS 5	Elf Bar Elfa	Uwell Caliburn G4	JUUL2
Best For	FDA compliance	Overall value	Disposable switchers	Budget	Cigarette feel
FDA PMTA Status	Authorized	Not authorized	Not authorized	Not authorized	Authorized
Type	Closed pod	Refillable pod	Pre-filled pod	Refillable pod	Closed pod
Battery	350mAh	1500mAh	500mAh	1300mAh	~500mAh
Activation	Draw	Dual (draw + button)	Draw	Button	Draw
Pod Capacity	1.8ml (pre-filled)	2.5ml (refillable)	2ml (pre-filled)	2.5ml (refillable)	0.7ml (pre-filled)
Upfront Cost	$12–15	$25–30	$10–12	$22–25	$35–45
Monthly Cost (est.)	$60–80	$25–40	$40–60	$20–35	$60–90
Flavor Variety	Low (2 flavors)	Unlimited	High (Elf Bar flavors)	Unlimited	Low (2 flavors)