Gotta say, the more I use this ZNA 60 the more impressed I am with the DNA 60 board. I'm just as happy with it as I have been with the 200's and the 75's. Although it doesn't like the ni200 .03 ohm dual coil build's I've been using with the 200's and 75's it works very nicely with the .05 ohm single coil and I'm getting damn near as good a vape compared. I could easily vape all day on one of these if not for having to switch up flavors and until I build another I only have the one 60 in rotation. But it's been perfect, with all the outside work I've been doing and using the ZNA for a handy work pocket mod it's been speculator in all aspects, it's fit my needs perfectly! I keep it in rotation in my normal two mod's/flavors rotation through out the day even when inside. Heck, when I get another built I may well end up using just these, If a person was creative you could build a pretty small mod with the 60. Leave to Evolv to come up with yet another great safer vaping board, they have a customer for life with me.