Everyone is different! It's all good, though I don't much care for the really quiet ones - some feedback is a GOOD thing. I've encountered women who moan, groan, yell, scream, yodel, swear, ululate, and even laugh hysterically when they orgasm. One even purred!
oh the memories .. the biggest hit I ever had to my ego was the girl who every time she came ..she started laughing hysterically ...well it really bothered me the first time ...after that I got used to it