I'm still using an original Xbox. It has a mod chip and big hard drive, so I can copy or burn any rented games, movies, music, porn, etc to it and not pay a cent....making it less appealing to go out and spend a big chuck on money on another gaming system. I have Madden 2007 on my PC and that is good enough for now. My gf and I have a baby on the way, so I can't see myself dropping much coin into a new system (or having much time to enjoy it).
If I do get something new, It will be an Xbox 360. I do a lot of work for Microsoft and can get Xbox 360 games & accessories uber cheap, so it would be the best move for me. One Microsoft discount program (MS 360 games for $10) some of you might qualify for is mentioned
HERE. They are currently offering Xbox 360 Bundles (Premium console that has 20 GB, additional wireless controller, Gears of War, and Viva Piņata included) to qualifying retail associates for $389. Some of you might want to check it out if you (or a family member) work in retail. The 360s seem less expensive here (no idea why) in Canada so the deal isn't as great for me but some of you may like it.