Has anyone had any experience with these cards for use in an HTPC system?  I am currently using a Geforce 8800GT for the hardware decoding of the H.264 stream and it works great.  But I am wanting to turn my Mum's old PC into an HTPC for her.  I will give her the 8800 and it gives me a great opportunity to upgrade to one of these Radeons Tongue out (I do a bit of gaming and other stuff on my PC, it's not a dedicated HTPC)

 

Previously I read on here that the Radeon cards and drivers had a few issues with Windows 7 Media Centre.  Is this problem still present in the 5*** generation of cards?  Can anyone comment on their experiences with using one of these cards with 7MC.  Have you been able to get audio bitstreaming properly to your receivers etc etc?