I am using a PA80. In short, I have some gripe over its operating system, but it sounds great.

It has only two fill-ins that are very intolerant; you make a mistake or unable (because your hand is busy) to press it at the right time and it will bark at you. On the positive side the chord variations give you the opportunity to have more fill-ins or bass runs hidden, but with limited use. PA80 also has good synth editing capabilities that are very useful. You can replace all of its styles with your own; one of the main reasons I bought it.

If I can go back and make my purchase again, I will still consider only PA80 and PSR2000 (of course, given my budget).

One other thing, Korg customer support has not been as good to me as Yamaha. They have ignored me a few times (not every time) while Yamaha has even got my phone number from the ISP and called me when their email bounced back.

Hope this help.

Shiral