For me, 7 inches. I'd love to be able to wank a 7 incher.
One time I mentioned something like this to a friend....I said " damm, now a days a good fucking is worse than a work-out-- takes me a few days to recover"----and he agreed!!good 20 min fucking...45 is pushing my endurance level a bit... during the work week, it's hard to find that much energy
I'll take the 10" and make it work!Be careful what you wish for. Most men would rather have a functional 4 inch penis, than a erectile deficient 10 inch one