I'd have to vote for an MVP 2.0. Its built like a tank, you can get cool wraps for it from JWraps, the battery charge lasts for 2-3 days (even with chain vaping), its vv AND vw, the rectangular shape won't roll off of a table and break your favorite pyrex tank, you can charge USB devices from it (its basically a portable power source AND a vape box). If you get into VAMO's and mech mods, you have to buy extra batteries, carry around a case with spare batteries in case you chain vape (like I do). IMHO, you can buy 2 MVP's for $40 each from completevape.com (they are always out of stock, but they get shipments weekly and will ship QUICK from San Diego) and be good for well over a year. I carry my MVP and one of Innokin's keychain juice cans on the keychain and don't have to lug around extra stuff. PRICELESS! I keep the battery mods for home and the MVP's for work/road trips/long haul vaping. If you got an MVP and an Aspire Nautilus tank, you'd be in tasty vape heaven sitting atop a huge cloud.