I see there are like core, premium, Elite, and stuff. 360 is the only next gen console thing I don't have access to, (My girlfriend has a Wii but she lives quite far so I might just get a Wii as well, but choosing which model of Wii to get is very simple) but I found Elite too expensive. If I have 500GB external HDD and Blu-ray player, I figure there's very little merit of large HDD and HD-DVD drive. But what exact difference are there between different models? Are all models moddable? Also, are any models obsolete in North America? The cheapest I see in nearby retailers are $499 bundle pack. I figured instead of buying 4 multi platform games for PS3, I'd just get a cheap model or used working 360 and run backup DVD off it. P.S. anybody selling modded working used 360 for cheap?