Depends on what you're studying. If youre studying graphics, music, video, or other creative field, than go for the mac. If you're into engineering or other professions that don't normally use macs, than go for the windows. Be aware, macs will soon be running on intel chips and be able to dual-boot windows and mac os. ALso 64-bit is here. The dell is definitely light and pretty well equipped.
Should I get a Powerbook 15in or customize an HP laptop for cheaper? I really want a Mac but is it worth the just over $2000 when the HP is just under $1500? I was looking at customizing a HP dv1000 to have WinXP Pro, 1.73ghz Pentium M, 80gig 5400rpm, 14in WXGA Xbrite screen, 1gig ram, DVD+-r/rw, cdr/rw, integrated wireless. The powerbook has comparable features, but 15.2in screen, id upgrade the ram though, and they weigh the same.