hey, I have the 8600 WUXGA. I didn't know this forum existed and made the dreaded mistake of thinking more expensive was better and got in on the $750 off deal.
Overall it rocks. The clarity is sick and it is totally useable. But, if I had it to over again I'd opt for a lower resolution. Dell wouldn't let me return it for a lower res and still keep the $750 deal so I decided to keep it.
So, after a month + with it, I still enjoy it, though looking at it for extended periods of time does strain eyes.