Aman27deep
Herald
I'm planning to get the 4gb one, and later get the 250GB hard drive ranging between 5-8k on Ebay if I run short of space.
You should do that then. But as Ethan said, if you don't use xbox live a lot and download stuff off it, 4g will be enough. But rememmber you won't be able to install games on your xbox. For example games like battlefield 3 when installed on the HDD look much better (Though you can use a 16gig pen drive to install it, i think).