Someone else was just asking about this the other day. If I remember correctly, the Vamo V6 does go above 15W (which is an enhancement from the V5.) When I read that other post, I googled Vamo v. Evic and got some good hits (a lot of previous threads on ECF included.) I recently picked up the Sigelei Zmax V3 because I'd never had a tube mod (or one with replaceable batteries.) I don't drip/subohm, so I don't really need a lot of power. I am running Nautilus tanks, and I was working my MVPs pretty hard at 10.5-11.0 W. Even with the Zmax, I really don't go much above 11W with the Nautis.
I looked at the Vamos (V5s and V6). I would have gone for the V6 if I wouldn't have had to order from
fasttech. I wanted something a little (LOT) sooner than what FT would have been able to deliver. I may still get one - I don't know.
Sorry for rambling. I finally shied away from the Vamo V5 (even though they were pretty inexpensive) because a number of folks had commented on button issues. There seemed to be fewer complaints about the Zmax.
Hard to say what you're going to like better. Try to hunt down reviews and take it from there!
Good Luck