Have you guys played the new Yamaha P250? I played one last week and the action is much lighter than the older P250's. I read some unhappy posts about this in other forums and I couldn't believe tha Yamaha would change the P250 because it used to be the keyboard of choice for both it's sounds and action... but they did apparently. Seriously, the P250 was sitting next to one of the newer Casio Privias in a music store and I thought the graded hammer keyboard action of the Casio felt better. Yamaha didn't lighten the P250 itself though: it's still 70lbs.

For college dorm use and everything that Tony specified, I would still recommend the lightweight $899 Casio Privia PX-555.