Looks like we're going to be battling this out ;P I don't trust many of XP's drivers. They usally work on, but some(particually video) don't seem to be as good as what you can get from the manufactures site.
As for broadband, it seems most computers use ethernet connections to the broadband modems. IN that case, any OS is basically set up for the interet ;P On that note, I don't like XP's way of networking. Well, mostly Home edition. All the stupid wizards confuse me and make things take longer. Now maybe if someone has no experince with something, it would help. But I mean come on, it even has a wizard to help search your comp ;P
Stability, I should add I guess since you asked about that. I've personally had more problems with XP than 2000. Now I do have one comp that is running XP pro and has been since about a year ago with no real problems. However, on my computers that stuff really mattesr(IE my server and my video computer) I run 2000 on them.
I guess all in all, it depends on what features you really want.