the MB is a very nice PC.
orbitz im in the same boat, considering a 1210 as a replacement. the MB 1.83 i have now is being bought by my gf and i have to decide what i want to replace it with. i will probably get a dell desktop just for giggles, and probably go MB again. its SUCH a nice computer, and itll run XP for my programming stuff at school. that and the xps 1210 is 400$ more for aabout the same config, thats no good. but it comes with the 3yr warranty, opposed to the MB with just a 1yr for now.
overall they will probably cost within 200$ of eachother. xps is smaller/lighter/ and has of course better GFX.
hard, tough decision for me.