thanks, guys, very helpful thoughts. Sounds pretty flexible and stout. Lemonboy's link put me at ease about its future, and from what you all say, it seems like it would great for building a rhythm section for someone who likes to play the instruments but isn't good enough at them to nail complete performances, especially with the V-drums. I think I'm looking for a way to simplify take management and make arrangement more flexible and modular in support of my play-everything-but-not-always-well approach. I guess I would do better programming drums, but fact is my head cannot think up the same things my hands can. Anyway, Maschine looks like it might do the job, I'm gonna see if I can get one from somewhere that'll let me return it if it doesn't suit.
@Blogman - the auto-chopping technique you describe - can it take and store MIDI that way as well as audio?
Also, what sort of outputs does it have, in terms of mapping stuff to Sonar tracks? Can you route different stuff it plays to different output tracks? Including Midi?
Thanks again, everyone...