Receiving: Yes!... with a slight edge for the BJ if it's OK to cum in the mouth or down the throat. I do like watching my cumshot make a big mess (and if done properly it's probably easier to keep me on the edge longer), but it's even better feeling my cum fill a mouth and then sensing it disappear.
Giving: Caressing and stroking a cock with my hands is very enjoyable, but I still choose BJ - maybe because of how much more sensitive my mouth is compared to my hands? And while I have an assertive and rather dominant personality, perhaps the feeling of submission is greater when giving a BJ and somehow I find this enjoyable and satisfying?