The dimensions of the PSR2000/2100/3000 all show to be 38-5/16 x 15-11/16 x 6-5/16.
If the Kaces Porter KKP7KB is still the same dimensions as always, I would highly recommend it. I believe there are a lot of players on SZ that would agree with this from what I have seen.
While the Kaces chart shows that the KKP9KB is the one to pick, a lot of us used the KKP7KB instead because it was a nice snug fit, so the kb didn't slide or bounce around. It is much smaller than the "oxie" KKP9KB which I use for my Tyros. This #9 case is much bigger than I really care to move around to the point that I seriously have considered getting a PSR3000 just so I can use the KKP7KB which I kept when I sold my PSR2000.
Because of the snug fit you will not need any other padding to protect your kb.
The #7 easily fit into my trunk and the #9 barely fits into my back seat.
Just my point of view.
Scott
[This message has been edited by Scott Langholff (edited 12-28-2004).]