I have the dark wood 40W like the one on puff palace
Only been using it for just over a week but must say I'm impressed,build quality seems good,Reads ohms at the same as my ohms meter.
Battery lasts well and haven't had any problems using it all day running a dripper coiled at 0.8-1.2 ohms at about 23W will fire at 40W I've just not found a build I like at that wattage yet.
Only thing I will point out is the cut out could be a bit bigger around the 510,would be an easy fix with the dremel if needed but it fits my veritas (just a little tight getting the cap back on) so not bothered sorting it yet