If you are wanting the MVP, being you are already using VW, look at the MVP V2 then. I have a V1 MVP, V3 iTaste stick, as well as an SVD. The MVP is a nice box mod to say the least, even in the original V1 it has nice features and very long battery life, currently my take to work base, fits in my pocket nice and easy even with a T3S on the connector, and my V3 with an Evod goes into my t-shirt pocket as a backup and different flavor device, SVD sits at home most times with my Protanks, RSSTs, or RDAs attached. Won't be getting into the 134 or MVR, but remember you can run the iTaste V3 and MVP in passthrough mode when charging, takes longer to top off the battery, but is one of the nice features of both.