I use the G6 auto batteries with mini tanks exclusively. I have tried lots of different 808 batteries and always ended up returning them, so now I just stick with Halo permanently. I can't stand the cartos though, I have to use the mini tanks. One tank lasts me 3-4 weeks. I've never had a leak either.
I would try a Triton if they made an automatic model, I hate having to push a button to vape.