I'm using an MVP2 with a Nautilus Mini and I think it's working great (though I really don't have anything to compare to). Really good vapor and flavor. I'm on my third day on the charge out of the box, probably about 8ml of juice so far. I am very satisfied with it, great build quality, comfortable to hold, probably not as big as you might think from pictures,and the vv vw is great for dialing in different juices and what is comfortable for a throat hit and inhale.
Oh and since I started on Thursday I haven't even thought about lighting up, all I can think about is vaping!
So yea I'm with everybody else, the MVP2 is a great little device.