I think its more of a personal preference thing on the "noise" in bed thing. However, one thing most men (and women for that matter) don't like is a silent lover. You know what I'm talking about, the kind of person who basically just lays there while you do your business and never makes a single peep. Often times, we gauge how much the other person is enjoying themselves - a goal for most of us - by their reactions. The most evident reaction is noise of some sort. Whether that's yelling out "peanut butter and jelly" or your name, everybody needs SOME sign that they're doing it right.

Which is ALSO why the only time a woman ever gets considered to be bad in bed is pretty much when she's completely silent and basically a bore. And that's pretty much an across the board agreement amongst men. No matter how attractive a woman, if she is boring, silent, and pretty much just present in the sack, we'll let her go...and won't think twice about it. Sex is supposed to be fun and adventurous. It's a connection. It's had to make anything other than a physical connection with somebody who seems like they'd rather be playing sudoku.

I mean they even fake it in pr0n because that's what the people want to see.

Main point is, being silent is not the business. How much and what kind of noise is all subjective...but you've got to do something.