As Netflix is a requirement, it rules out Mede8er, Dune and Popcorn Hour players. WD TV SMP is a decent choice. No DTS-MA support however. Boxee Box is also decent provided you can live with the fact it's no longer supported by Boxee and HD audio has drop-outs. If XBMC, then I'd recommend the Intel i3 with Windows (for Netflix) or the new Haswell boxes just coming out, but you'll need to add memory, mSSD, etc.
Roku also may be fine for you, with Plex (to manage your local media) installed somewhere (Windows/MAC machines, NAS, etc.).
HD Media Keen Videosaurus