I've had 6 and I've had 10. How skilled the lover is is what is really important. I had the guy with 6 give me as many orgasms as I wanted. Fucked me good, ate me great, fingered me like a pro. It was the whole package. The 10' was a great fuck, not too rough but firm as I like it deep, but he grooved and swirled so I wasn't getting "beat up" and it made me crazy. A big cock just hammering away can be unpleasant especially when the sounds of discomfort are being interpreted as sounds of pleasure. Communication is key with a larger cock. Be vocal "hey slow done a little" "Not as hard" "work me deep and slow" until we have a rhythm and I'll tell you "give it to me or fuck me!" and its on. I'll take skill over Neanderthal all day long. My sweet spot is in the 7-9 for a good hard sex session.