I ended up replying in full to the other post, argh. Look there for my original summary. In reply to some of the posts here:
I have the 16" 8890, and don't have issues with ghosting or other stuff. In fact its made me go look for a newer desktop LCD (current is NEC 15") as I'm smitten with the 1280x1024 bug. Morrowind is OK, SC4 is great, Pro Pinball was good once I got rid of every 'Accessibility' feature.
I'll need to fire up Renegade for the real test I suppose.
I use GameDrive on my PCs so don't need to worry as much about loading times, and stop carrying a DiscGear Discus full of game CDs to conventions. The 7200 RPM HDD shines here, though got full quick. May get 2nd drive just for VCDs or Ghost images, for that I'd get a smaller sized 5200 or 4200 RPM.
I did not care about battery life (yeah shoot me now), my purchase to replace both a work laptop that I was not using (and returned to them), and a gaming laptop that was painfully slow (celeron 466 I think). In both cases I needed a mobile desktop, so that's what I got.