I'm going on a month with my 9000 Pro and thought I'd share some thoughts. I can't say how the 9000 Pro compares with the PSR2000 but maybe my experiences will add something to the discussion.
I do like the fact that the PSR2000 is using the new Scorch XF music display format and hope that could be a future upgrade for the 9000 Pro.
My 9000 Pro in it's carry case just fits in the back seat floorboard of my VW Cabrio so I have found it easy to transport despite the fact that it is a 76-note keyboard (in fact, it's only 3 inches longer than my former keyboard, the 61-note Roland EM-2000, however it is 10" longer than the PSR2000). At 45lbs it's not light but it's lighter and far less bulky than the PSR9000 and seems like it would be easier to carry, but it's nearly twice the weight of the PSR2000 if that's a consideration.
I use a pair of powered JBL EON 10's with it which weigh a mere 23lbs but deliver 175 watts each of biamped digital power. This combo is very effective and I just set the speakers behind me and tilt them up.
I added the Piano expansion card to my 9kPro give it a better acoustic piano and increased the polyphony to over 190 notes. That may sound like a lot but it isn't when you really put the accompaniment to work and play the keyboard overtop of it (many top sounds use more than one voice). This alone would put the either the 9000 Pro or the PSR9000 over the non-expandable 61-note polyphony PSR2000.
My 9000 Pro came with a hard drive and I find that indispensible because I play mostly solo gigs but I do some gigs with different vocalists, so now each singer I work with has their own directory on the HD that I can access quickly.
One other cool thing about the 9000 Pro is the gee-whiz effect... I am using a pair of gooseneck lights like Yamaha recommends for the 9000 Pro and they work great. The subdued light is enough to light up my music as well as the keyboard. This gives the 9000 Pro a soft glow from the stage that really gets attention. I have added to this by placing a couple of artificial flame pots on black plant stands on either side of the 9000 Pro when I play, which happen to have the same brushed-aluminum finish as the 9000 Pro (they are called "Bob" and are available from Musician's Friend). The end result is a simple but dramatic stage appearance with the 9000 lit up with "flames" on either side.
People are wowed by the 9000 Pro, both for how it sounds and for how it looks especially with it's lights at night. I rather enjoy enjoy working with a top-flight 21st century keyboard that looks the part.
Esh
http://www.mp3.com/esh