Having always used AW button top batteries in my Provaris, the thought of using another brand just "feels" wrong.I'm thinking it should be pointed out that Provape does not recommend using the Procyon High Performance End Cap with the P3 or Classic when using button top batteries as the user will be unable to fully thread it to the end. Only flat top batteries are recommended in this situation.
EDIT: I'm sorry, I'm on my Xbox One, can't copy/paste so I got lazy and typed what I thought I remembered. I suck. Here's what it actually says on their website:
"Some button top batteries may take up more room inside the tube and not allow you to tighten the cap all the way. Works best with flat top batteries."
But I said to myself "Self...if Provape says it's ok, and the new cap delivers better performance, just go for it."
Seems to be working out pretty great!