[quote name='Phokis']Just use a 16gig flash drive with the new update that came out....
If you are getting an official hdd, go big. After 1 installed game, 1 demo, and 1 halo dlc, a 20gig is pretty much full....[/QUOTE]
quoted for truth.
Also you can have 2 drives running at a time, so 32gb max...So either do that or go for the 250gb