I currently have a 30GB 4200RPM HD in my iBook. It's too small and slow. I want to upgrade to a new one. For about $150, I can get either a) 60GB 7200RPM, b) 100GB 5400RPM, c) 200GB 7200RPM Desktop Drive + External Enclosure.
Since I will be doing mostly BT, websurfing, programming, watching...