Depends how you mean. I think in terms of orgasm quality, sex is sex, I can get a better orgasm off my hand because I know my own knob. In terms of fun and variety, generally yeah, someone you're familiar with and you know what they like and vice versa, is always gonna be better than a first time with a stranger because most people might still be a bit conservative with what they'll do with a stranger, whereas the more comfortable you get with someone, the barriers start to come down. I've had a handful one ONS girls that have been pretty ****ing wild, though, but generally, most aren't quite so daring.