As just a base Topps set collector, 71 and 72 were tough due to just the sheer volume. Both are near 800 cards each and those semi highs and highs in ex or better add up. I almost have a VG set of 71's with all the upgrades I've had to do after all the lots I bought and dug through.
Al...that list looks daunting. I'll leave those sets to the experts...