My first white 20GB Xbox lasted a couple of years before dying with the dreaded 'Red Ring of Death' but I'd been enjoying it so it was replaced in 2012 with a 120GB model - the newer black, quieter model. This is still working OK in 2015.
Used initially mainly as a Windows Media Center extender, but also for Netflix, catch up TV, the odd game, and the brilliant on-demand Xbox Movie rental.
At the time of writing (January 2015) I have no desire for an Xbox One, because I'm not sure what it can offer me that the 360 doesn't already do...
5 out of 5