My dick size when erect is the ideal size period. 8 x 6 is def. what women are looking for: big, exciting, show off, but doesn't actually hurt them.
sometimes i have to be careful when starting penetration, sometimes my gf says it hurts a little, sometimes she has trouble doing good blowjobs, but most of the time, the sex is awesome and i can actually screw her really intense.
so all in all, i wouldnt really change my erect size.
BUT, i'm a big time "grower" (i am like 4 inches soft, and smaller when cold, obviously) and my flaccid size i find really inadequate.
So if there was anything to change, it would be my flaccid size. I would love a good 6 x 4 flaccid size