I have been wrestling with whether to invest in a Windows Home Server (WHS). While the positives are pretty apparent: backups, remote access, low power consumption; I have not found a lot of information on cons. Further, I have been unable to locate a definitive answer on whether WHS will work with a Windows media extender. Finally, I am not sure which direction to go: buy or build. [HP's MediaSmart Server](http://www.hp.com/united-states/campaigns/mediasmart-server/) seems to have gotten a lot of positive buzz, while this [guide for building a green $400 Windows Home Server](http://www.homeserverhacks.com/2008/04/build-green-400-windows-home-server_2871.html) seems pretty promising.