I haven't had a 360 in a very long time, but I have a few questions. First, all I could get is the $200 version, which has only a 4GB hard drive. Assuming I do not want any downloadable games, would 4GB be enough? Second, what are the odds I'd be able to "mod" it? I have not kept up with the 360 scene at all, and have no clue what it's hackability status is. Third, assuming buying a new one would be modable, is there anyway to play isos off an external HDD, ala PS3? If not, what about internal HDD? If not, is there ANY method that doesn't require buying burnable discs? Thanks for the help.