I just wanted to let you know that the style sequencer on the Sd1 is very basic. No loop recording, no event editing, no copy measure, no delete measure, and no different time signature within the same style.
I just happen to try out a psr 2000 today and I was very impressed with the style sequencer, it seemed to be alot more advanced than my sd1's sequencer.
Anyways I am sure the style sequencer on the Pa80 is more powerful than the sd1, so good luck.