Tallest would have been 6’2” barefoot, big deep blue eyes, firm breasts, perfect pink nipples and a very tight deep pussy- I never bottomed out in her pussy. She used to ask me "do I look tall in this"...
Roundest- a mate's sister who proved to be insatiable, 5'6" and 90 kg; she was a lot of fun but my mates mocked me when I told them so. She was big without being obese and we hooked up for three or four years. She was easy to enter but I had to be careful not to go deep; she tightened considerably as we fucked and would usually be milking my cock with her pussy as she orgasmed.