To see WD's comparison chart of the 1200, 1000,and 800 go to: http://forums.storagereview.net/viewtopic....p?p=34691#34691
only differences posted on WD's site that I could find are:
1200 and 800 Buffer to Disk rate = 602 ms
1000 Buffer to Disk rate = 525ms
1200 Seek Mode 0 = 39dBA, Mode 3 = 35dBA
1000 and 800 Seek Mode 0 = 39dBA, Mode 3 = 37dBA
Of course the benchmark tests yield more real world information but I wonder what small (?) variations in results amount to in terms of the actual performance of the drive that I would notice (average artist noticer). The WD800JB is now in the mail on the way to my door...hoping for the best.