It seems there are no reviews of this keyboard so far, or at least I haven't seen one so here it goes.
I decided to buy it from qtan, even though I knew nothing about it, but I was very positively rewarded.
ConstructionThe plastic seems very high quality, it's hard and doesn't flex at all. The whole keyboard is sturdy and it's probably the best-built keyboard I have now (except for the Model M maybe).
The plate is matte black and looks very nice if you look under the keycaps
KeycapsThe keycaps are reasonably okay. They're pad printed and have a nice texture. The blue font actually looks rather good.
Other stuffThe board has 4 rubber pads, which do a good job preventing the keyboard from slipping and moving around the desk. There are 2 foldable legs with removable rubber tips. I've never seen such a construction before, but it seems pretty well-done.
There isn't much branding on the keyboard, only one noppoo logo in the front of the right corner and a label on the bottom.
The cable has a nice wire strap, which can be removed and used somewhere else too.
ExtrasIt comes with a translucent F12 key (there's a led under that key, but I don't know how to turn it on:D) and a pretty well-working plastic key-puller. After a few hours of using I noticed a second bag in the box, though. And this bag included a lavender arrow block, a blue WASD block and a red escape key. I'm not sure these keys come with the keyboard or qtan adds them extra, but it's certainly nice - it's 10 extra keys for a $90 keyboard.
ConclusionI bought this board with MX Reds and I was going to use it for mods. So far I like it very much, even with the red switches, which I don't particularly like. Unfortunately, the case is the most horribly frustrating thing I've ever tried to open. I spent 15 minutes trying to open it and I gave in not wanting to break it. I do want to change the switches, but I just don't know how yet...
On the one hand I wasn't expecting such a good quality keyboard for this price, on the other I have owned the Noppoo Choc Mini, so I knew the company could be trusted. I can't compare it to filco or leopold, but the quality is really high and I can barely find any problems with it, except for that unopenable case.
Pros: cheap, many extra keys, high quality, nkro
Cons: case, case, case.
Disassembly (updated 25 Aug 2013)I finally got down to opening this case and it appears it's not that bad at all. I was just trying to do it the wrong way. Credit cards don't work that well. I used a Swiss army knife to deal with the clips and this time I succeeded after 3 minutes.
For the record: I started with the bottom four clips. I just put the blade between the plastic parts and fiddled a bit until all 4 clips were loose. Then the side clips (don't forget about these bastards) and finally the same for the 4 top ones.
So here are the pics:
The interior of the bottom and top part:
The visible top side and whole bottom side of the PCB:
So I have to say the quality of soldering is very good. Now that I've opened it, I really can't say anything bad about this board. I definitely recommend it.