anyone on here use these yet? I see alot of talk anout the tanks(i really like them) have not seen much about the batts tho. Do they work ok? Has anyone had any doa problems? I am thinking about getting the wife the pink set now that she is starting to get into the vaping again. She is useing a ego type battery now and needs another for a backup. I was trying to steer her towards a MVP or a vv mod but she wants to stay with a ego style set up. Thoughts, Opinions, and winning lottery numbers are welcome.