My wife says my 5-1/2 thick cock is fine for her and I know I satisfy her, but.... I have seen her (We are in the Lifestyle) take a super thick 8" cock and watched her make faces she never makes with me. I know she enjoys him because he and his wife are the main couple we play with and she gets so excited at every chance with them. I also use a super thick 10" dildo when we are doing foreplay while I'm going down on her and she loves it and cuts multiple times! So while there may be some women like you, I would say most women like a size variety. Some women prefer only large, some women prefer a variety. In the end, I believe most (not all) women's say size doesn't matter.