So I have had a good 3 1/2 months to play around with all three of the Alpha's and I have to say that hands down the Ultra is the way to go. Now this is just in my opinion, but it's the best of the 3. All three of them have about the same draw, no matter which atomizer you use. But for me everything about the Ultra is just right. Battery life, size and peformance. One AW 14500 battery will easily last me all day. The size is just barely bigger than the UltraLite when compared to how much smaller it is than the UltraMax. A good size ratio would be this: If the UltraLite is a 0 and the UltraMax is a 10 then the Ultra would be about a 3 or 3.5. I can thow it in my pocket and not even know that it's there. The 1ml RES works great for me, plus I always have a 3ml bottle with me wherever I go, and 4mls of liquid is plenty for me in a day. And now that we offer the 14250 batteries you can use it at 3.7v or 6v. So again in my opinion, there is nothing better than the Alpha Ultra. Just wanted to throw out an update on what I have been thinking after a good long use of all of them.