For me, they are both a lot of fun. But whether I enjoy a blow job or sex depends on the talent of the woman I am with. I have had some toe curling experiences with woman who know how it's done, while others just could not keep the right pace - switches hands often - or just not reading my body language. The same could be said for men going down on woman, some are good at it.....some need a map and step by step directions. The same for sex. Some woman just lay there waiting for it to be over, while others are in the moment...pushing back, meeting your thrusts, rolling you over and taking control. So again, it depends on the talents of my partner.