I don't think the PSR 2000 will really compare with the PSR 9000 Pro, but it might be a better run for the money.
The PSR 9000 Pro has about 40 more voices. Not that many, but significant if they're really great voices.
The PSR 9000 Pro has sampling capability.
The PSR 9000 Pro has more keys and semi-weighted keys and aftertouch. You're going to get a much better piano feel.
The PSR 9000 Pro has a hard drive (Or just HD capability?) where you can store many many styles, samples, and registrations. The PSR 2000 has flash rom: just 1 mb.
On the plus side for the PSR 2000, as compared to the PSR 740, it will have direct disk play from floppy. This is from a Yamaha rep, but I am waiting to get this confirmed. If this is not true, musicians will have to delete from their measley 1 mb of style rom (if it's full) during a performance in order to load a new style.
The PSR 9000 Pro takes expansion cards that expand wave rom and allow for such things as emulation of wind instrument sounds and killer organ sounds.
The PSR 9000 Pro has SCSI connection to the computer.
The PSR 9000 Pro has video out.
The PSR 9000 Pro has double the polyphany.
How can you really compare these two keyboards?
If you are mostly interested in onboard styles and sounds, it looks like the PSR 2000 will come pretty close to the PSR 9000. There is someone making a chart comparing these three keyboards.
I am planning on purchasing the PSR 2000 when it comes out (If it indeed has direct disk style play). I can just barely afford the PSR 9000 (If it's true that you can buy them in some places for $2000). But the PSR 2000 is much lighter, and since I do several music programs at some schools where I carry my keyboard in one hand and a box of musical instruments on a luggage cart, this would be a pretty tall order with the PSR 9000, when I myself weigh only 135 lbs.
So the two advantages of the PSR 2000 are: Much cheaper and much lighter.
[This message has been edited by Beakybird (edited 08-26-2001).]