First off, screw Boxee. I used it and hated it. I'm back to using XBMC after leaving it for the Popcorn Hour because my Xbox couldn't play the content I wanted it to. However, XBMC is quite stable on more platforms (which you probably knew, seeing as Boxee is just a fork of XBMC) than just the Xbox now (in fact, they recently announced they will no longer maintain the Xbox branch). With the inclusion of VDPAU support building a box that can decode 1080p is even easier now. The Atom 330 plus Nvidia Ion is a pretty solid 1080p decoding platform.