I've got Volcanos version, they call it the Magma-T.
I've only put a few tankfuls through it but my observations so far are that;
the draw is pretty tight,
the flavor is kinda weak,
holds about .7 ml,
seems to wick okay,
I didn't get any "burnt" taste,
the vapor is atomized well,
I didn't have any leaking problems.
I've been using poly filled cartomizers lately, and the 510 tank won't be replacing them.
Mostly I don't like the draw, and the thought of leaving the house with only one atty scares me