a few of us use reaper. reaper has an optional install driver called rearoute that directs audio from one program into reaper live. so you can have 16 stereo tracks running in mpc routed into reaper. i find it hella easy. i have a template set up with tracks set to rearoute inputs. i have like 5 stereo tracks dedicated to different drum parts within programs i've made, plus four more stereos for chops or hybrid patches for bass, and i can add more if i need them but that tends to do me, as i add the rest with live instruments/synths/reaper audio edits etc.
heres a thread about reaper + mpc
viewtopic.php?f=36&t=173318