I'm looking into getting either the twist 650 mah or the iTaste. The way I've configured things I'd spend about the same for the iTaste with one battery or the twist with 2 batteries. I won't be using these when I go to work, I'll still be using my 808 sticks there. Just too easy to mess up in my line of work. I'll end up spending a little more for the egos, but that's with 2 batteries. What advice could you give?