Satanika kindly uploaded the 5.1 pcm to the newsgroups, enabling the use of lossless audio on the Bluray set. The AC3 tracks already sound fantastic, but for folks with real high fidelity sound systems it will be even better. Even if you can't do the full thing with HDMI or multichannel analogue, the core DTS 1509 over S/PDIF should sound great too.

As far as the picture quality goes, how much of an improvement you'll see over the dvd versions depends largely on how good your player is at de-interlacing and scaling. Compared to lesser upconversion, the Blu set would be a significant advance; but something like the Silicon Optix HQV or ABT DVDO processing found in high end players and external sets might well be able to exceed it.

I've managed to get all three movies downloaded by now, and am seeding them back like crazy, but haven't watched them yet because I'm still looking for the best way to burn double layers dvd's. I have flipped through them a bit on the computer, and even with the built in scaling being fairly rubbishy, the improvement over the GOUT is quite significant. Definitely looking forward to being able finally see these!