I wish to thank all responders to my 2000/9000 question. You have given me very helpful information.
It's unfortunate that the PSR 2000 doesn't include a 76 key variant as I'm sometimes frustrated by my 530's 61 key limitations and may have the same frustration with the 2000. Is there a keyboard comparable to the PSR 2000 that is available in 76 key configuration? I like the PSR series and will probably stay with it, but I wonder whether there's a decent alternative.