Donny,
OK...here is my HO.
IF you really want to do MORE editing, programming PRO level MIDI stuff, and want all the PRO features (as to functions) you can get today....get a PA3.
BUT, Do not expect the sounds to be like Yamaha.
Some are really super, and for on stage, jazz, dance, and the younger crowds...the PA# will kick butt.

BUT if you like the Yamaha sound and smoothness as to the sounds and how they are right out of the box especially how the STS's are and how the sounds work together) ......don't bother with a Korg. Also, If you want to play more mideastern etc. usic the Korg is the way to go. Go to youtube and the factory sites (KOrgPA.com) and listen to LOTS of (all you can find on the PA3 so far) and Yamaha performances and decide if you like the sound....Also, I find the orchestral stuff lacking in quality/quantity in the Korg...and that's fine as most Korg players don't care I guess.
for me the sound HAS to rule...or the inspiration goes away.