I’ve gotten a few of these things to play with and to add support to the nw2s::b. By far even the older grayscale monomes beat the feel of anything else I’ve tried, and the new ones are a pleasure to use.
That being said, I got a 128 oontztrument and it’s not bad. I like the feel of it better than the launchpad, but some of the mechanicals aren’t what I would call robust. The way the 8x8 PCBs, for example are attached to each other is supposed to be just by laying a tack solder across some pads that happen to line up. I added a bit more strength to that joint by laying across some copper wire before soldering.
Other than that, it went together pretty easily and I used a leonardo inside rather than an uno s I could get USB support.