Really hard one to answer. I love both.
I lick, kiss and suckle on pussy til I'm begged to stop. I feel very powerful and own her pleasure which is quite the intoxicating feeling.
On the other hand, when I'm placed on my knees in front of a cock, it's a very different situation altogether. I become submissive and am very aware that I am the tool by which he gets his pleasure. He owns his pleasure, he owns my mouth, he takes control and that very much pleases me. Also very intoxicating.
I really do love both equally.