I've only heard the 3000 on mp3's and the computer, I've also heard the 9000 on mp3's and the computer, the sound seems better for the 3000.......BUT in my studio the 9000 tweaked and running thru my logitech 5500 or my behringer 1200's sounds much better than anything else I've heard on mp3's or cd's and as good as any electronic device creating actual instruments that I've been fortunate to hear.
All these keyboards do a terrific job and the 9k is just my preferrence for what I do.
My next choice would be the 3000 and not the tyros just because of the speakers, as the psr9000 opposed to the 9000 pro because of the speakers. actually I have the use of the pro at church which I installed in a permament setting about 3 years ago, and the pro was chosen because someone not knowing about electronic boards can just hit on, and play piano with both hands. eliminating having a acoustic taking up space.
Just my opinion, I'm not into the arranger part of these boards that much, but still like to fiddle around with the goodies, and hope someday to get more involved in style making etc. I'm convinced that if you play around with any of these keyboards, they'll almost do anything you can conceive in your mind and there's a way to get what your after. (Granted the newer does it easier and maybe better) but seems like the newer ones leave out great features of the old, but also has things the old dosn't have.
Also seems like all of us is destined to buy several before we come up with the one we like, then Bam they come out with some new bells and whistles, ya just gotta have.
My 9k's days may be numbered as I type, the tyII may do it (the tyI didn't) all because of the wooden speaker boxes onboard with 65 watt amp, the better key feel, the many little items like 3way split board,scat voices, the adjustments that lets a grand piano sound like a grand when you hit it hard etc etc. They all have adjustments but the 9000's do a great job and still give a hint of a real set of keys, and let you tear up a acordian tune, or do a little flamingo on the guitar.....
That's the way I like it ahuh ahuh.......Pose