Got a DNA 30 on the way.. Just looking to play around and learn about mec mods and RBA. So I take it the battery life on something like a mech mod is not to good?
A mech mod is basically a container for a battery.
On most mech mods, they include adjustable center pin on the 510 connector; that has been a big problem on regulated mod where you have an otherwise perfectly good device but the center pin gets pressed in and you can't get it working again without risking tearing apart the device.
Once you get off the cigs and get established vaping, having a couple mechs lying around is good for backup.
I've got vamo's and a sigelei zmax; the thread on them is m21x1.
I picked up 2 chi you's and a king mod; (oh! and a ph22); also m21x1 threaded; so I got interchangeability between some parts.
I also picked up a private, sentinel, nemesis but they're put in a box - all different threads.
Also got a poldiac; not m21x1 threaded, but it is top fired, unlike mose mech mods which are bottom fired.