Yesterday I said I was looking at the D830 or the T61, but I had forgotten about the Dell Latitude D630 that I had looked at a couple times. After talking with Tiff about getting a new laptop and getting the okay, I finally went with the D630.
I think this will be a nice compromise of screen real estate and portability. I really like having the WSXGA+ screen, but the laptop is big. I think the WXGA+ resolution will be workable while on the road and when I'm at my desk I'll typically be hooked up to an external LCD anyway, so the drop in resolution shouldn't be as horrible as I thought it might be.
I guess we'll see if I made the right choice in a couple weeks.