I’m a huge RAH fan but I confess that I just skip his books from the 70’s on. Too much sex and woo-woo stuff for me. But his earlier stuff is gold! As already noted, THE MOON IS A HARSH MISTRESS may be his best book, and it’s well worth reading. I also love STARSHIP TROOPERS (a very good book turned into a wretched movie that had nothing to do with the book except the name), HAVE SPACESUIT, WILL TRAVEL, and just so much of his early stuff. Worth another look!
Thank you both for the additional information and advice. I will give his books another read. Probably won’t be for a month or so though - got a lot of stuff going on in August.