Just be careful that your AVR is putting out the same volume level for both LPCM and Bitstream, as there's a well known listener bias to hear "louder" as "better". They SHOULD be the same volume, but just double check that your AVR isn't doing anything funky in that regard as it only takes a small volume difference to screw up your subjective comparison.
I don't want to underplay the fact that some AVRs will have problems one way or the other. It happens -- bugs will always be with us. We've got one Beta Tester who has an AVR (which will remain unnamed) that's clearly having problems with LPCM input compared to either Bitstream or Analog. But just to be clear, a result like that represents a DESIGN FLAW. There's no good reason why the AVR shouldn't be able to handle LPCM input equally well.
The processing side of the equation sometimes favors LPCM, too. For example, there was a period when manufacturers were shipping AVRs that could either do DTS-HD MA decoding, or Room Correction processing, BUT NOT BOTH! They didn't have the processor horsepower to do both. So if you sent them a DTS-HD MA Bitstream, their Room Correction stuff shut down! So check for such factory installed gotchas in the owner's thread for your AVR.
Similarly, the older OPPO players had what were called "DTS Essentials" decoders -- the only thing DTS was licensing to Blu-ray players at the time. These decoders could not handle some of the fringe DTS formats.
So for example, there are rare, music Blu-ray discs that have DTS-HD MA 5.1 192KHz 24-bit tracks. The DTS Essentials decoder (as in the OPPO 83) will decode that into LPCM as 96KHz. But if you output Bitstream to an AVR that doesn't ALSO have an "Essentials" decoder, you can get the full 192KHz -- as for example in my Anthem Statement D2v.
DTS licensing for players has changed since then. The current OPPO players (103 / 105 / 103D) have fully featured DTS decoders, and will decode such tracks as full, 192KHz LPCM.