jedi raises some good points. The arps in the Mo do make for some nice guitar strumming simulations that are hard to duplicate in real time on a keyboard. Add that to a program like Rythym and Chords for Sonar, and you'd have a lot of variety. I've made some decent user arps that work well for guitar pieces for the Motif by taking the guitar accomp parts from a few of the better arranger patterns. I am going to try making some with some of the data produced by Rythym and Chords as well.

If auto accomp is the way you wanna go and premier sounds are important, then although I own ( and really like ) the PA80 arranger, I'd be hard pressed to argue against choosing a 9000 pro if you can afford it. It depends also on how much cost is a factor for you. One reason I don't have the 9k pro is the price. For a little more than the price of a new 9000 pro, I was able to get the PA80 and the Motif. For studio use I think I'd give the 9k pro a slight nod over the PA80, but not over the PA80 and Motif together. If you'd rather go the workstation route, and you aren't thrilled with the Triton sounds overall, then I'd have to lean towards recommending the Motif. I guess I just prefer the sounds over the Fantom's . Fantom seems to be an easier board to navigate and get around on though

I haven't tried any of the expansion boards just yet for the Motif, so I can't give you a good answer on that one yet, but I am going to purchase the VL board and a wind controller soon.