Doc-Z: You are correct about how the new audio key feature works. You can see a live video demo at http://www.rolandus.com/products/productdetails.aspx?ObjectId=856&ParentId=87

I had an FP-5 and loved it. The only reason I sold it was I wanted to try a more high-end arranger. I got the T2. The FP-5 however was a decent little arranger too. The session partner has lots of cool styles with two variations. Not as convenient/customizable as a full arranger but I did many gigs with just an FP-5 and its session partner. One last point. The action on the FP-5 was great and the internal speakers worked well. Of course, the flip side is IT'S HEAVY.