Best 3D Blu-Ray Player that can play MKV files!

Hi,

I was wondering if anyone had recommendations on the best 3D Blu-Ray Player out there at the moment which can play mkv files flawlessly? I already have a Sony BDP-S50 and only really need bistream output to Onkyo to NR905 to do High Def Audio. I have a HDX1000 currently doing a good job on the MKV front but would be nice to have just one box.