I'm considering purchasing an xbox 360 4 GB to play Battlefield 3 (when it comes out), Battlefield Bad Company (2), Halo games, and Call of Duty with friends online (well, and other games, but these ones specifically). Is the 4 gig version good enough for game saves? I am not opposed to upgrading to a hard drive eventually, but cash flow is tight right now, and I can't spring $300 + all the other stuff I will need to get started. Hopefully this is an acceptable place to post this. Thanks for your help everyone!