Dolby True HD vs. DTS HD

There is no answer that is true all of the time Tlg. Most of the time DTS HD is better and uses less compression. But in some cases D True HD sounds better. It's easy to compare if your Bluray remote has an audio button as most do. Just start the disc and switch back and forth while it's playing.

If you can't hear the difference between bitstream and lossless Longhorn you probably aren't playing the recordings back correctly. There is a major difference in quality.

Longhorn if your Marantz receiver doesn't decode the HD formats you won't be able to tell much of a difference. You will need to use the multichannel outputs on your Bluray player into the multichannel inputs on your Marantz to enjoy the true benefits of HD audio.