How do you give a guy a hand job?

Alright, I already know how to do this, but I'm curious about how others do it or how guys like to receive it. I've always done it by rubbing the penis (sliding just my hand up and down the length of it), up until I met my current boyfriend. When I tried this, he later complained that I had given him a brush burn (none of the other guys I've done this to had that happen). He showed me how he masturbates, and it's by gripping the shaft and moving the skin up and down with my hand, instead of just moving my hand. He's circumcised by the way, as were the other guys I've given hand jobs. So I'm wondering what method the majority of guys out there prefer, or for those who are giving the hand job, if you've only tried it one way or the other, or if you've done it both ways?