Okay, I'm probably REEEALLY late to the party asking this question, but whatever. I'm currently shopping around to buy my first 360. Obviously not a hard-core player. I'm weighing my options between picking up a refurbished 20GB system for $270 or a new 60GB for $350. So here's my question: How much memory does the average downloadable song from Rock Band or Guitar Hero take up? Are we talking 5 MB? 50? 500? I definitely a casual gamer, who doesn't see myself buying more than maybe a dozen games total for the system, so I won't be stuffing the Box full of other stuff. Would 20GB suffice for RB, GH, and maybe one or two more games like Penny Arcade or any FFXIII content that's gonna show up? Or would I be stupid to get anything less than 60GB, even if it's gonna cost me $80 more?