Just got a new kit, 1000mAh ego. Upgraded from 650. For the heck of it I tried the newer type B tanks. if you are an Ego user, let me tell you these are amazing. The tanks hold 50 drops of juice, made by joytec, and are about 1.5 x's wider. These hit so much harder than the type a,s. 3 second pull is all you need compared to 6-8 second on a traditional. check these out, wont be disappointed. Got my kit from Dfw by the way. So much better than dripping for me, but you can get wider drip tips if thats your thing. My ego looks like a cigar now.