I would have thought that ideal would be something like "never long enough but girtth has its limits" but I like the idea of 8.5 X 6-6.5 since I only modestly exceed the former (but can hit 10 if occasion is especially hot) and am about at the girth amount. A guy is 11X7.5 and a sensational fucker asked me recently after months of talking about all kinds of sexual matters what size I was. I thought he was going to make a bit of fun of me, but he said that I was in his opinion much more of an ideal size than his since there were often troubles with his size finding room at the inn. Made my day!!!