I bought this xbox 360 hard drive so that i could fully take advantage of the online downloads from xbox live. The 20gb was sufficient for the first 1st year but since then I've had to manage the space available. Setting up the drive to transfer from the 20gb to the 120gb was easy and simple. However it took over 1 hr and 30 min to transfer only 20gb. This upgrade has freed up my time worrying about the space available and allowed me to play more and watch more of the xbox live content. I have been also taking advantages of xbox 360 divx playback storing divx movies on the hard drive. Playing music is also much better now that i don't have to stream it from my computer. They say that their planning to introduce IPTV for the xbox service and that the 120gb would take advantage of the service. I cant wait for them to relase that feature.