What OWAL said .You shouldn't rule out all 1 TB HDs. It really depends on the manufacturer of said 1TB HDs.
Agreed. You can save some money since you said all your gaming is done on 360. However, what is your major? If you think you will be partitioning your laptop for another OS or even if you are running virtual machines... then those laptop specs can be utilized and really be put to use.
Keep searching and let us know :-)