Mo,
For the kind of music you are looking for and for ease of use, the Yamaha sure seems like the choice to me. The other posts so far seem to keep talking about playing more modern music. Korg has been famous for dance, hip hop and synth sounds since the triton was released. Although the 800 does a really nice job on providing acoustic sounds, the Yamaha has great acoustsic instruments and a nice selection of synth sounds as well. It has an easier to use interface and their Swing and Jazz, Latin and other ballads are beautiful to listen to. I still think the articulated Sax and trumpet sounds are more realistic then the PA800. Those that suggest the key feel is better on the PA800, I would think they are talking about the key feel on the older (62 note polyphony) PA1X and PA1XPRO keyboards. The action on the PA800 feels like the PA50, which is a very light, with not much response keyboard. The Yamaha is at least equal to the PA800 action if not a little better.
The other issue becomes if you like touch screens or buttons to choose things. Some feel very strongly either way.
For muting tracks and using registration memories, the Yamaha is in my opinion, easier to use and faster.
Sound wise, both are very good and I think the Yamaha is easier to turn of style parts you don't want and easier to call up banks of registrations that you set up for specific jobs or sets. I also find it much easier to select and program what features you want "frozen" when you hit the freeze button within the registration functions.
At $1599 vs $2699 the Yamaha gives a lot of bang with great sounds and styles. There are more intro's, endings and fill ins on the Yamaha then the Korg. Both have a ton of styles. I like that I can record wave file 16bit demo's of my vocals, midifiles, and styles right on a USB drive. With the new Korg operating system, you can record MP3's but only after purchasing a MP3 board which gets installed in the keyboard.
For midi file playback, the Yamaha is the fastest to find, load and play. Korg takes more time.


------------------
George Kaye
Kaye's Music Scene
Reseda, California
818-881-5566
www.kayesmusicscene.com