Although we are yet to give them formal tests, I'd be thinking Marantz AV8003 or Onkyo PR-SC886 processors, though both are on the wrong side of a grand.
If you'd prefer a more stripped down approach, and buy a Blu-ray player capable of decoding all HD audio formats and outputting them as Linear PCM, I really like the Audiolab 8000AP, which is just under £1000.
However, if you can live with the waste of buying a complete receiver and not using any of the amp channels, I'd be looking at the likes of the Onkyo TX-SR806 or 876 - it really depends whether you want the better video processing of the latter to upscale other sources - or even a TX-SR875 if you can find one at a good price, it being long replaced by the 876.