Girls do you like more or less cum from your man? Less when you swallow and more on your tits? Vise versa? How much is to much?
When I'm really in the mood for something very messy (usually after some wine). I love to have my breasts covered in cum, so the more the better. Too bad it dries so quick you have to shower right away after. Some guy's barely produce any. Some others can have surprising amounts !
How much a guy produces depends on a couple things including some tricks the girl can do to get more out of him.
If you ladies want more cum from your guy, edge him for a while, and/or - slip your lubed finger into his anus while you stroke or suck on him. A vibrating butt plug will produce copious amounts of cum too. Pam Anderson ( of Bay Watch fame) explained that very thing on Howard Stern's radio show. She advised sliding a vibrator into your guy while giving him head. She told the audience she did that with Tommy Lee, the rock drummer.
I've never give much thought about amounts. I just love to make my man cum, and he knows he has permission to put it wherever turns him on at the moment. Lots or little never mattered much. Now I'm going to have to start paying attention to this.