When I goto the market for a new one, I am looking for a few things, good battery life (which depends on compnents), BIOS it uses, processor it uses and above all, support for docking station video card (which is most likely tied to BIOS). HD is cool, but hte higher speeds mans more juice and more heat..I do mostly SAN at my home, so small HD is preferrable for me.
Just some food for thought.......