The Xbox 360 250GB is a hard drive which can store/install a lot of games, it is easy to install and remove. I like how it comes with a few demos, and trailers which save you time from downloading them yourself. The hard drive does not make any noticeable noise running ripped games from a game disc like Forza 2 motorsports compared to running games from the disc tray.
It's just a typical hard drive which works at doing the job of storing games, musiv, video, and other files. The price is fair if you get it from eBay, or another online store. I just paid 80 bucks for it from a seller on Ebay which is a nice discount instead of buying it from Gamestop.
If you have a lot of games, you can rip/install them to your Xbox 360 for faster load times, quieter gaming since the xbox 360 hard drive is a lot quieter then the game disc drive for the Xbox 360 Fat version, and you can buy lots of Full Xbox Live games from Live marketplace.