I would say more often than not, yes. But if he makes bad sex noises, it's all over. Like, if he makes horrible porn grunts (like he heard in that one movie) or other such things, I'm grabbing the bit-gag. Also, the first guy I was ever with made noises like a girl, and it really skeeved me out. Luckily I am mad turned on by my current guys noises and he knows it
I wouldn't say that louder is better, but vocal is definitely better. I get extremely turned on by sound (breathing, moans, whimpers, whispers) and love when my partner is comfortable enough to let it show.