So what turns you on is the amount of cum a guy shoots out?
I think wherever a guy ends up finishing, whether it's on the girls face, tits, ass, feet, pussy, ass or mouth, we could surely agree that more is merrier!
To be honest I like the idea of the guy finishing in her mouth more than the visual effect of seeing the cum on her face. It feels much better in real life so that's what I like seeing it in JAV as well. When the actresses let the cum drip out their mouth after it is great as well.
That is a good point. One thing about watching porn for me is to visualise myself in the scene, being the one that is on the end of the girls blowjob, and so seeing things that you feel more of an affinity with in real life is going to have a beneficial effect.
I think the facial thing for me is kind of the opposite. Real girls simply don't want to have some guy blast over their face. It gets in their hair, eyes, everywhere. Rare is it that a girl will let you do it so maybe that's why i enjoy it that much more when i see it in porn. I know stories are everywhere about girls being more and more influenced by what they see in porn, but sadly i've found out that not to be true. Maybe i was just born in the wrong generation lol.