I'm a Seventies guy all the way, so my collecting sweet spot are the 1970-1980 card runs I've been working on since I was a kid. I have recently opted to get out of slabs for the most part with my collection of the Seventies (except for the superstars) and go with binders. I like to put the card in a cardsaver and then display in 4 pocket sheets.
Now, as to the best set from my era for binder display:
The backs make the set. All of the others from the era are dingy looking, hard to read, but the 71 OPC has a great back design.
Another set I really enjoy in binder form, again because of the backs:
The interesting thing to me, design-wise, is that Topps had really good, legible backs for so many years then switched to crap around 1970.
I didn't notice it as much when I was younger but after 50, sorting the backs on some of these cards is hellish. Worst ever is the 1975 Topps basketball:
Dark blue on dark green on gray. You go blind trying to sort these.