I have to say, I regret that rules only allow me to give your post a single “like.”
Y'know it's funny, back on the old forum we used to have separate "like" and "thank" buttons, so you actually could've! But in all seriousness thanks for your kind words, I could romanticize about these Columbia quads all day, to me they're on par with or perhaps in some cases even better than the best modern 5.1 attempts. I owe it to the forum for helping me learn all this stuff, and to these great reissue companies like AF or DV for getting these amazing old mixes out there for modern listeners to enjoy.