I use my hapax, and my band mate uses his mpc, once a session he has to reboot his mpc with all the drums stopping then. The hapax never failed during our 1.5 years project we are currently running.

Also the workflow is really thought out - if push behaved like it, i would probably still use push to sequence abelton, but hapax is miles ahead. The automation stuff is really fast, and fun compared to abelton live. Painting the automation is actually fun. Its easy to record sequences, or build them in the step sequencer or live mode. Never seen a more fun sequencer to use.

I control Rytm and Digitone with It, its pretty good.

He is on OS 3 of the mpc.