As so far as Stock coil tanks, I think the Innokin Zlide and the Innokin Zenith are miles ahead of anything else imo. 3 of my friends/family have both quit using them and when I was setting them up and demonstrating them I was pretty blown away by the quality of the vape and the overall quality of the tanks. It's total noobs using them and they've not had any leaking, or any issues. Coil life seems really good too.
If I wasn't used to making my own coils for a few pence I would just buy a few Zlides and have done with it. I'd be more than happy with them.