Recommendations for HTPC's?

[VDR User]

I agree with the previous opinion to use something based on nvidia.
Support for it is very mature & stable at this point. VAAPI isn't
nearly as well supported. Mini-itx systems are just fine too. I have a
mix of mini-itx (ion and ion2) htpcs as well as a few matx and atx. Of
them all I prefer mini-itx the most because of the really small
footprint, very low power consumption, no noise/fans/moving parts,
etc. Who doesn't like a totally silent htpc that's the size of a
nintendo wii?