Gator GK-88 Slim

Been using this for 1.5 years now. It fits perfectly with the KeyLab 88 MkII and a Behringer UMC404HD in the big compartment. I can even put another smaller keyboard (in my case the Roland A-49) on top of the KeyLab. The two pockets for pedals in the smaller compartment are nice, I use them all the time. Overall, this case fits everything I need with my keyboard (even a laptop stand), and everything is very easy to access.

The stitching isn't very durable, however, so you have to be careful if you have a heavier keyboard. The big strap is starting to rip off, and I can't use it anymore. Granted, when full with my stuff the case weighs over 35 kilos. The plastic handles have held up really well, though. Even though the one on the ‘bottom’ (where the wheels are) isn't very comfortable without gloves.

Also a word of warning — DO NOT step inside the case! It will not hold your weight.