I like the overall design other than the ridges and the cheap-looking top loader disc tray. The size looks incredible though. Too bad they didn't drop the price - it's almost more of a price increase over the old model.
I'm actually thinking of upgrading. Gamestop is doing double trade-in value on consoles right now, so I could get like $180 for my fat PS3. Considering it seems like most fat PS3s run the risk of YLODing at any given moment, it might be worth the trade.