Thanks for the information Andrea. I've found the THX PAL to be pretty "acceptable" compared to the ntsc versions too. There is only 1 or 2 scenes where I have noticed it's effects. The stormtroopers breaking through the blown up door on the tantive is one. The laser bolts here show dvnr effects but not as bad as the ntsc versions. They are rather good pressings as well with not very much rot or dropouts. I have the 97SE pal now too. Someday I'd like to compare it's dvnr vs the other sources to see if it's any better.
If I capture using my s315 and the ati theater750pcie it gives a really decent picture actually. It looks about as good as capturing ntsc except at scene changes where it will blend a bit if the luma is similar. The extra resolution really helps alleviate rainbowing and twinkling star fields. I'll probably end up using software decoding for these though once it's fully developed since I can fully tweak every setting instead of letting the capture card decide.