When I was with my ex, she told me I had the biggest dick she ever had, even though I consider myself pretty average (probably somewhere between 6-7 inches, depending on arousal). We broke up 3 months ago and, in the meantime, she's hooked up with a few guys, one of whom she admitted had a bigger dick than me and was a pretty good fuck. I visited her last night to chat and asked her in honesty if she ever had better sex with the 'larger guy' and she said it came pretty close. So I asked her if she wanted to have sex with me for one last time (to be fair, I was pretty sexually frustrated by this point, being dry for a few months) and she agreed.
What resulted was the best sex I've ever had. She told me it was awesome too and, even though her last guy was bigger, she told me I 'felt bigger' because she was so turned on.
So, in answer to the original thread question, some girls may prefer and get turned on by big dicks (hey, if you're a size queen, good on ya, and keep going for it!), but I always like to get girls who are open to anything and even if they've had bigger dicks in the past, you can always make them feel fulfilled if you have the talent elsewhere. That's why I love most of the girls I've met. Some of them 'have been round the block' and some of them are more subtle - but either way, I've had some great sex and size has never been questioned. I'm a pretty self-conscious guy in all areas and always stupidly ask girls if my cock was big enough for them - but I've always had great feedback on my sex We're all up far a good time, and if you truly care about the person you're with (either for a 5min quickie or a long term relationship) you'll give them the time of day.