Have you used a V2 Boxee box? Its honestly almost unusable and underpowered from both a software and hardware perspective, even the remote feels cheap. Their D-Link V1 box was a significantly better but they didn't make it, it cost twice as much as a Roku and was only a hundred bucks less then an Xbox which they couldn't compete with. So they tried to take on Roku on the low end and flubbed it badly.
The one thing boxee has always done better then anyone else is their XBMC overlay for playing back local (or network attached) media. This is also where Samsung lacks, if anything this should be where Boxee's talent can play a part.