Just to return to topic, which was a question of the MVP, I think. I've had one for about 6 months and use it with my ProTanks (full size and mini) and now recently with a Fogger V4. It works well with all of them. The Fogger has by far better flavor, but it's a rebuildable, so I can change wicks and coils whenever. I think with Protanks, and I suspect the same wqould be true of a Nautilus, the temptation to drive the coils to its bitter end may be why flavor suffers for me. Being kind of cheap, (OK, way cheap) I have a hard time letting go of a coil I paid cash money for.
Anyhoo, for the money, I think the MVP is the best bang for the buck when you consider its a vv/vw device and it has a monstrous battery life. Even chain huffing the Fogger it lasts all day.