DVD is increasingly showing a strain in providing HD content.

[DraconianAC]

I don't know, I'm very skeptical about trusting a hard drive to keepsake my whole game. I heard that's the route MS wants to eventually take--a complete media download into the console. (correct me if I'm wrong on this) If they do, then higher capacity hard drives are a must if you want to keep a few games in hand. Many also don't have a fast enough connection to download 25+GBs fast enough.