That groupbuy Kangxin squonker has my attention. Would be nice to have a VW device to go along with my two bottom-fed attys from FC (Velocity and LowPro), and I love that they decided to go with a logo-less design.
Speaking of the LowPro, I received mine earlier this week and finally got around to throwing a build in it. Performance-wise it's great, though it has one major flaw: the two wire slots on the side without the insulator are either cut too wide or too far away from the screws, so they won't catch the wire when tightened. I tried with twisted 27g and 30g and it wasn't working at all. The only way around this is to slightly curl the end of the coil leg(s) so that it extends into the screw well and then tighten it down directly -- unfortunately this is problematic since the screws tighten the same direction, they begin to twist the coils in opposite directions, turning it into a much more difficult atty to build on than it should be. I might post a picture or two if I can find the time.
It could have easily been a 10/10 if it were machined properly or the screw heads on the affected side were bigger, but now it's an 8/10.
edit: Has anyone tried using titanium wire in a Kangxin-chipped TC device? I'm waiting on some titanium wire so haven't had a chance to test it myself; would like to avoid using nickel but temperature control ability is something I'd like to try.