By far my favourite is 69 with a guy, simultaneously sucking cock and getting sucked: it is so amazing to have my mouth and throat wrapped around a guy's beautiful cock while feeling his mouth and throat wrapped around my cock. Man-on-man 69 is absolute perfection, and since I discovered the incredible pleasures of anal play, I now love to do it as foreplay, maybe eventually deepening the 69 with me going past his cock and balls and beginning to rim his perfect asshole. In terms of the choice of sucking cock or getting sucked: I have zero interest in hooking up with a guy that just wants to suck my cock (there seems to be so many bisexual men out there that want to do that, always advertising no reciprocation needed). And I no longer have any interest in getting together, for example, with a straight man who just wants his cock sucked. For me, it's always both, sucking cock and getting sucked. Cock is the most beautiful thing in the universe, and therefore always needs to be shared between men. The only time I'll agree not to suck his cock is when he is a total bottom and only wants his asshole to be played with (and sucking my cock), and since I am obsessed with a male asshole, I will agree, and attack his asshole with my entire face, tongue, fingers, and cock with hunger like you've never seen. The young 20-year-old twink with whom I lost my gay virginity with in 2013 was such a guy: every time I attempted to put his cock in my mouth he pushed my face away, and just re-presented his ass to me to continue rimming him.
i prefer sucking to getting sucked. i only had one person in my whole life who could consistently make me cum every time they sucked me. its never been done since. i have had many people over t he years try and they think "they " are the one to do it. it got to a point where it was just awkward for me and so i just told them i dont want it. i will gladly suck a cock off and swallow whatever he wants to give me..
My mouth needs cock in the same way my body needs oxygen. I do not mind at all bumping into a guy who feels the same way, though.