Well I gave in and spent the $13.55 to buy the 24/48 FLAC versions from the Burning Shed 24 store. They wouldn't give me them for "free" even though I had already paid for this music in multiple formats via the Deluxe Edition.
Anyway, yes, there are extra levels of transparency and dimension to these files over the 16/44.1 redbook version. Depending on the capabilities of your system and headphones you may or may not notice the differences but for anyone with a good reference system and good ears it's easily discernable. I have compared both versions in their entirety so I say this with absolute confidence. If you like the music on Grace For Drowning and have a system that does justice to high-res audio you will surely want to purchase this. I don't own a Blu-Ray drive for my PC or Mac so I was unable to extract the audio myself, thus this was a much cheaper and faster option.
As previously discussed, the sound quality of this album is quite good. Dynamics are very good but they are often contrived, and by that I mean that they were purposely mastered that way; not in a natural sense as if the music was building up or softening down as part of the inherent qualities of the album and musicianship, but rather forced through editing to simulate dynamics. Sure, it's better than having a brickwalled album but when the dynamics are contrived it's harder to pay attention to the content and cohesiveness of the arrangement and you find yourself paying more attention to the mastering job. This applies to both redbook and high-res versions.
Another interesting thing of note is that you can tell that certain parts of songs were recorded on different gear in different settings (or that some were mastered poorly) than other parts of the same song, as some have a wide, expansive soundstage that sounds natural and beautiful whereas others sound closed in and thin by comparison, and lack a full-bodied tone.
If listening with headphones, the HD800 are a fantastic choice for GFD. There is no piercing treble on the 24/48 version that I can tell (perhaps with the exception of "Raider II" in some parts), rather it's quite smooth and pleasing and as such sound superb on the HD800.
Edited by IPodPJ - 11/8/11 at 10:55pm