I'm getting an X-Box 360 for Christmas this year, which is the perfect gift for a 35 year old. I'm getting the 4GB because it's cheap and I have no intention of storing anything but save points on it. I'm perfectly capable of inserting discs and streaming Netflix through the Wifi. Is there anything else I need to be concerned with by not getting the 250GB?
If you don't plan on downloading tons of extras I would think the 4GB would be fine. If you do have lots of games, the profiles stored on the HDD may be quite large though....especially when if you have map packs.