I've never tried .divx, but I have streamed unprotected .mp4 files (podcasts) to my PS3 over Wi-Fi; my only recommendation is to not use Windows Media Player as your server (since it can't handle the same media formats as the PS3). To me, the head-to-head comparisons are less important than the variety of titles. It seems like every big announcement for the 360 is a 1st / 3rd person shooter or a driving sim. Take a look at what's coming out on either system (exclusives mainly, but you can look for extra content on multi-platform games as well), and decide which interests you. For me, FF 13 pretty much made my decision for me. (That being said, one of the games that I had expected to be multi-platform - Beautiful Katamari - dropped the PS3 version, so recognize that things may change before release.) PS3 also has the advantage of being a Blu-Ray player, which I admit....I haven't used as much as I'd like. (Sony is actually also running a promotion for 5 free Blu-Ray movies with the purchase of any Blu-Ray player, including the PS3. It's an extremely limited list, so don't expect "Pirates of the Carribean" on there, but it at least allows the opportunity to show off your HDTV.