Wolf - D1X has: - Better build quality, of course (D1X is mostly based on the F5, D100 on the F80 - enough said there) - Better autofocus system - Higher max shutter speed (1/16000 vs 1/4000) - Built-in PC sync socket (D100 has a hotshoe adapter for it) - Bigger buffer (you mentioned that) - 2" LCD instead of 1.8" - High-speed Firewire port I'm sure there are other differences, but those are the ones that I consider significant Worth $2k more? shrug -=>Donald