@spiritofradio - OK, regarding the RUSH - "Permanent Waves 40th Anniversary Edition" vs. OP; I listened to side one of both. I think the vocals have a little less hiss on the 40th. The guitar solos also seem to be a little more distinct, not as much fuzz on the 40th. The vinyl on the 40th is a little more noisy. Overall, they are pretty close, but for some reason the OP moves me a little more. I would be happy with either. I haven't played the extra live LP's from the 40th set yet.
If it came down to spending $69 for the 40th 3-LP set, vs. $10 -$15 for a great OP copy, I would choose the OP. But I'm happy to have both...