Just to share my experience. Over the years I went from 6x5 to 7.8/6.2. I have been married 15 years no kids. She really responded well to increased size. She wants sex more often and seems to really enjoy it. But 3 weeks ago she told me that she gets really sore after sex. Told me to get some lube, which I did. We tried with lube and so far she is OK. So I think I will continue to reach my goal of 8x6.5. In the beginning of sessions she only takes it part of the way, but at the end she takes it all with out bottoming out.