psr vs. korg pa

Is the Korg PA 500 better then the (either) PSR s900 or the s700 in terms of
1. Sound quality
2. Ease of use during live use
3. Overall nice setup

?
and by the way, is my keyboard PSR 1500 a popular keyboard for One Man Band? as I notice everyone seemed to be talking about the 3k, and now th s900...?

Thanks.
Shim

Shim,

1. Only your ears and heart will decide that.
2. I believe Korg is as easy in live use, now having the PA800 for a while.
3. Setups are very different, but easy enough in both cases.
4. Third party support (help, styles, etc) - hands down, Yamaha is the clear winner.

zuki