Blind Test Suggested PCM VS. Bitstream

[halmo20]

My current set up is HDMI 1.2 receiver and PS3. As long as PS3 gets 'Internal' decoding of DTS-HD MA, I will be happy sending it to my AVR via PCM. Some users however seem to think bitstream results in better sound. Now, given that no artificial processing is done to the digital signal (I think PS3 doesn't do any of that), I know (or I think I know) that PCM and Bitstream should give same SQ.. If however, as some users have suggested, bitstream results in better SQ, I am more than willing to spend extra buck for TruHD/DTS-HDMA bitstream capable player and Decode capable receiver. But I have to know for sure that it does results in better SQ.. I don't want to know biases opinion with placebo effect..
Has anyone here done a 'BLIND TEST' using a player that is capable of BOTH internal decoding of HD sound format AND bitstream to capable receiver and found that indeed bitstream gave better SQ??? Of course the volume level in both cases has to be same and no other processing should be applied to either case. Or such test has been done anywhere else???

Edit: I myself have done double blind test using PS3 and regular Dolby Digital. Internal Decoding VS Bitstream. When PS3's internal PCM volume was adjusted to match my AVR's bitstream decoding volume level, I absolutely could not tell any difference. I can't run similar test with TruHD or DTS-HD myself. I want us to start building some consensus here.. I think it will prove useful for many users.


Thanks