You know, that Casio PX-555R that George mentioned has been on mind to go check out. I've only seen it in the glossy catalog from Casio. It looks sleek and nicely styled.
It says its a digital piano with hammer-action keys but its got arranger features too. (an 88-key arranger in disguise here?)
Rick, its got a lot of the things from your list.
32-note poly, Touch-sensitive,
Midi In/Out and USB connectivity,
258 tones,
120 rhythms,
auto-accompaniment
Auto-Harmonize,
8 digital effects/reverb,
Registration setups,
One-touch Presets,
SmartMedia Card slot,
Headphones:2 (huh?)
2 pedals,
Line Outs:L/mono and Right,
Mic in,
Built in Speakers.
George says around $800?
Casio has me interested in the WK3800 thats suppose to be out in the fall (Europe anyway), I might take a close gander at this one myself.