The protank mini 2&3 aren't really that different,just a minor cosmetic difference.I think the protank 3 coils are a little different is about all.I'm not trying to talk you out of the protank,but if you want a tank that is a work horse and is awesome IMHO and the coils last longer ( a little bit more expensive but worth it) is the Nautilus mini.http:// www.vaportalk.com/shop/nautilus-mini-airflow- adjustable-tank-system/ Its on sale in the Vapor talk store and the coils are also on sale http://www.vaportalk.com/shop/aspire-nautilus-bvc- coils-2/ Hope this helps you out,if you really want the tank and coils quicker obviously you can go to your local B&M (Brick & Mortar) Vape shop,but you will most likely be paying a little more there.