Not sure about MythTV but this little box doesn't come anywhere close to Windows Media Center, 4 tuners, CAD/CAM implementation decoding 4 channels of glorious Sky HD, which of course then also links through to ALL the online players via IE shortcuts within MCE. Let's also not forget the unlimited network sharing of a simple media file.
I'll gladly take the hit on a 450w PSU (and did!) for all that functionality... and in fact, all this functionality is about the ONLY thing I miss about living in the UK.
Anyone know how to get a Middle East OSN subscription in to MCE? :(
Such a shame it was a b*tch to setup the card emulation and decoding or, it might have become much more popular!