I'm very particular about 2 things.
Key feel, and inyternal speakers.
The Tyros has a stiffer feel, but the key stroke is shorter tham the 3k and somehow, that matters to me. I can "dig in" more and get a better expression from my dynamic interpretations of the music. Maybe it's just me, but even though the action is lighter, I like the longer downward stroke a lot better.
The speaker issue is non-negotiable. I simply must have the full mix - right in front of my face at all times....with or without extranal amplification.

The Tyros sounds fantastic, but so does the 3000, so I really miss nothing.
I don't need to layer more than 2 voices in teh RH, I prefer the USB and SM storage to a hard drive anyway, and the size/weight ratio is the best out there.

I'v espoken out many times about the flimsy, cheesy keys on the psr line, and I STILL hate them all ..... but I hate the 3k a little less than the others. That downward stroke thing is big in my comfort factor. I never got comfortable with the Tyros action, dispite the stiffer feel.
Chocolate and Vanilla, right?