Go with a Varibale something, not a twist. A twist in not really an upgrade from what you are using, more of a lateral move. While a MVP 2 is a fine
device, I would never recommend one. Why? Because that it has an internal battery, once it's toast, the
device is toast. Also, it just doesn't put out. Maxes out at 11 watts. While this may be fine and dandy for many at their current level of vape, but since you mentioned that you were interested in builds, then 11 watts will be a disappointment once you do builds that give a fantastic vape at 15 watts, but just great at 11 watts. Get something you can grow into and not have to upgrade from.
Recommend reviewing all the contenders, check out their pros and cons, their power outputs, build quality... Find one that calls your name and go with that.
A VTR, SVD, Provari, Telsa,
svoemesto, are all great devises, just to name a few.