I recently purchased an Ableton Push 2 from eBay that came with this carry case included with it. Fitting the Push 2 into it, it seemed like the case was pretty pointless. So I searched for it to see if others' opinions were the same, or there was some 'reason for being' I had missed.
On Amazon, all the reviews seemed to be pretty positive though. So, as someone that doesn't really have a need for it or having used it, I thought I might as well give my (negative) opinion to add some balance.
Firstly, trying to fit the Push 2 into the UDG case was extremely tight. I guess that's good for keeping it well protected (rather than having it slopping about inside the case). but I would say it's a bit too tight.
Secondly, the foam padding on mine has started to pull away from the edge of the case. This is a case of better glue being needed, and also the tight fit causing too strain when fitting / removing the Push 2 into / from the case.
There's no space in the case for anything other than the Push 2. It's nice that's it quite a tight fit, i.e. the case isn't a lot larger than the Push 2 itself, but I would much prefer it had space for the power adapter and USB cable. What point is taking the Push 2 with you without the power and USB?
Okay, you could argue that the power and USB can just be carried in your standard bag. But (depending on the size of your bag), so could the Push. No, it wouldn't be as well protected as in the UDG Hardcase, but there's not really much on the Push that could easily be broken off in a bag (like faders). If you were concerned about the buttons and knobs, you could put a decksaver on it before you put it in your bag (the decksaver is cheaper than this bag).
You can't use the Push 2 in the bag - it's for transporting / storing the Push 2 only. A design that allows the top & rear area to unzip completely so the Push can be used in the bag, then the top just zipped back on when you're finished would be much better in my opinion.
Other than that, the bag seems fairly decent. Nice zips, decently comfortable handle (though I haven't actually carried it anywhere), well padded, and the case is 'hard' but not completely rigid.
If I was after a case myself I'd be much more likely to go with something like a Gorilla Ableton Push Instrument Case (affiliate link). This case looks like it has room for the power and USB and the Push 2 can be used in the case. It will also look smarter if you already have your other audio equipment in flight cases.