My Circle Y has a twist so wide that this 5'8" guy can barely touch the horse with my lower leg. I have to turn my toes way out and then bend at the knee until my heel finally makes contact. So I prefer my DownUnder, which has a narrow enough twist that my calves are next to the horse.
I don't think it is a male/female thing. My 14 year old daughter loves the Circle Y, and it doesn't seem to make her do the splits the way it does me. Don't know why. I was guessing it is because she likes to ride with more of a chair seat, but that doesn't explain it for other people: