I'm a female. I only mention it because it's relevant to the topic, and may lend some credence to what I say.
Big dicks are way fucking overrated.
Average is superior. Small and tiny are also fine, especially if Mr Mcdude is cool with adding like, toys/kink/oral to make take the experience from 'neat' to 'fucking awesome'.
Big. Dicks. Hurt.
I'm pretty sure most women feel the same. I know at least one overly-endowed dude who's still a virgin because he can't find anyone who's game to try out his cunt-destroyer, and plenty of girls I have talked to have bitched about taking something out of their league and just not feeling right for days. Days.
I had a friend come to me on day 3 after their Big Dickin', and ask if I thought they needed to go to a doctor, because it still hurt to sit, and they were worried.
tldr
Take it from this cuntastrophe:
A big dick might look stylish. It might be amazing for porn, a visual media. But real life shuns the massive donger. Average penis master race.