Alright. Well, seeing the nature of the site I'm assuming most chicks here are size queens. He asked for our opinions as well as those of men, and I don't think it's fair of you guys to sit around and tell us that our opinions are negated because we're biased. We're the ones with the cunts that you're fucking, or would like to fuck. We know what our cunts like, and for any of you to say different is just sort of funny.
That being said.
For me, yes. Size is an -issue-. I get really really wet, and because of that, I can't get good friction unless I have someone stretching me open so far I can't feel anything else. A cock that is six inches with a decent girth will make me content for about five minutes before I start to get bored.
However, not all women feel this way. Particularly petite girls, or women who run dryer than myself. My friend Mandi has never taken more than seven inches of cock at one time, and she said she thought that almost killed her.
Also. I check the Sex with a Large Penis forum on here frequently, and there are a couple threads about a "deep spot" orgasm which I've had the pleasure of experiencing about four times.
If this orgasm exists, tell me how penis size does -not- matter, guys. Seriously. Again, not trying to offend, but as we're the ones trying to tell our bodies to get off on your fucking, which may or may not happen, I think you should take any female opinion given. Not your assumptions based on clinical research.