I would not get any system with Vista yet. There are too many legal issues.
Did you know that if it finds anything that is not vista certified or illegal (i.e. downloaded songs, movies, tv shows, or even some programs like Itunes) it will delete the items without telling you. It's in the license agreement - check it out. One of my co-workers printed it and highlighted the sections.
right now, most software is not "vista certified" including ITunes and it will delete your music and other stuff, including the program, without telling you.
Everyone I know is moving to a MAC now that vista came out.
Prevent a litter
Fix your critter