Here is my in-progress update (pre-review?), having watched the first four titles in the set so far [Thrill Of A Romance (1945), Fiesta (1947), This Time For Keeps (1947), and Pagan Love Song (1950)]. All are of reasonable quality for vintage Technicolor sourced materials. Thrill of Romance is by far the best of the bunch with deeply saturated colors, nicely balanced contrast, and only a few shots where regstration is a tiny bit off. Fiesta is the most visually problematic of the four, although it is by no means a disaster. It looks like a lot of work went into it, with different source issues noticeable to critical viewers depending on what reels you are watching. The first reel is the closest to unacceptable as there is unusually heavy high contrast edge ringing (not limited to titles/opticals) that does not look source-related. Fortunately, this does not continue through the rest of the film. This Time for Keeps is very good although not as consistent in its color and density as Thrill of Romance. Pagan Love Song is not quite as sharp as the others with possibly a bit more fading.
Audio wise, they all sound pretty similar (non-mag sources with light sporadic crackling and only mild noise reduction artifacts) except that there is a lot of "optical crackle" during portions of the first reel of Pagan Love Song, including during Howard Keel's first "House of Singing Bamboo" musical number. It sounds like they had to go with a lower generation source for this part of the film.
Regards,