I'm actually hooked on the CME controllers these days, and plan on upgrading my M-Audio's.
I've been hooked on Alesis's Controller Dome since I tried their Air-FX, and it's a nice addition as a MIDI CC controller, but It's only available on their audio interface version of the Photon. But the MIDI only version features an X/Y joystick, as opposed to seperate pitch/mod-wheels, and I prefer a joystick. I'm not really fond of either keyboards action, but the Alesis is better, IMO.
Get the Photon.