Greetings; If you go to the ECF-APV subforum, you'll find a section devoted to Vamo, and lots of discussion of all the Vamo models. Also, I heard it said that PBusardo is reviewing the V5 soon, and if you google that name, you'll find reviews of previous Vamo models that will give you some idea of how these regulated mods are.
I've got a V3 and, meh, I really enjoy the huge
vaping improvement over the Twist that I used to use, and I like the features, but the build quality of my V3 leaves a lot to be desired (though I am sure there are people who will disagree with this statement). I've also bought an SVD, and I can't give a personal opinion because it hasn't arrived yet, but i'm expecting a much better build quality for something that isn't hugely more expensive.
Regards
Glenn