Apart from raw sensation there is a mental dynamic to sex whether it be that you are in control, she is in control, you are intimate or you are kinky. COF is usually a power move, while getting an HJ is usually a submissive move (unless you are telling her exactly what to do). I prefer more intimate sex, where there is a lot of kissing, you are trying to please each over, many sexual positions but cum in missionary or cowgirl and then hold each over for a spell.