My warranty issues worked out happily. I've got a new unit already, and I'm completely happy with it. I swear the screen doesn't shake as much when I type, and even the stickers are lined up better.

Adam made a good point to me yesterday. If you want somebody to come out to your office and install your hard drive for you then dude, you're gettin' a Dell. But if the weight and battery charge time don't bother you, and you don't need on-site service, the Sager is looking pretty hard to beat for the money.
Though I'm still not 100% sure this thing will make it three years, I feel a lot better about it now than I did on Monday.
I'm also impressed with the hard drive sled, which I had to swap as part of the replacement. It's almost as nice as the IBM systems, and doesn't require you to buy special enclosures with the drive (major bonus). And really, the difficulty difference is between "for ages 4 and up" for the IBM and "for ages 6 and up" for the Sager.
While packing up the old unit to send back, I realized that I'd left a CD in the drive. I was able to use the AudioDJ controls to eject it without firing up the notebook or looking for a paperclip. Handy!