I have the Roland A500S and the Roland BK5. I don't like both keybeds. Keys are too short, and can't find a nice velocity curve.

In the other side, I have a PSRA2000, and Korg MicroKey 37 and the velocity curve is perfect out of the box

I don't like so much the Novation SLMKII velocity curve too

I am still searching for the best keyboard for vArranger