I definitely prefer large. For viewing, there is no question that the bigger the better for me. Even sucking and getting penetrated I prefer them big. I do have my limits while I am on the bottom. I love ladyboys and I have been with a lot. There is only one whom I didn't even consider because she was just too big - literally nearly the thickness of a beer can and 8 inches. I couldn't do it. There have been a couple of others that I felt like I was being split in two. But generally I love big