Personally length is of little concern, width is preferred by me personally. (3 children, a 7 lb and two 9 lb babies, surely things are not as snug as they once were) the first few inches are where most of the nerve endings are. Beyond the first few inches I can't really feel the length unless one hits my cervix. Ouch. But the head only does lots for me. Don't know if we are allowed to say that or not, guess we will see. Just a simple reinsertion and withdraw and repeat as necessary is really all it takes for me. So length is of no value. I can't speak for all girls only me.