I have just resently starting using a pv, after a few days im not completely satisfied. The short battery life does not bother me, I know I can get a bigger battery. I am careful of how much juice i put on the little piece of white batting in the refillable cartridge things that came with my starter kit, but it still leaks. Vapor production is not that great, and there is not much taste when i use it. I have seen many parts that say are compatible with the 510. I guess my biggest question is it worth it to get different parts to make it better or just getting a different pv kit? Also which Pv?