We used an m-audio axiom in our studio and I really did love that thing. This was before I grabbed a Maschine so the knobs, pads and the faders came in pretty handy. Most importantly the keys felt decent as well.
Oxygen 8 plays really well, is quite easy to program and its small enough to go in a gig bag. My Evolution UC-33 also deserves a shout after nearly a decade of abuse. My mate was looking to buy a fancy new controller but couldn’t find anything to match it. He got one on Ebay for £60-70 good as new.