I sell sex toys and I can tell you what size vibrators and dildoes I sell the most of. I can tell you so much more than these studies by men because I inquire about size preference in almost every situation. The ladies don't lie to me. I'm not there to sell them big sex toys I'm there to help them find what they want, whether it be small, average or large to very very large. I can also count on one hand how many women have complained about their men being too small. I've been at my store for almost a year now.
i spent years slinging adult do-dads in a high-end perv emporium
i can one hundred percent back up what Ms. Tattooed is saying
women, for the most part, will buy the average size toy IF they buy an insertable toy
most women go for external clitoral stimulation toy
yeah... going by what gets most women off you are better off focusing on a nice manicure and oral skills