Hurr durr, you're only a man if you finish last and make her come multiple times. Hurr durr, may as well not finish at all, just to show her how much of a man I am, because she needs reminding that I have testosterone, dammit.

Seriously.

I prefer to receive oral. Nothing beats that tongue. Damn. But both are fine. Nether of us have particularly high libidos, though. You may have surmised that already.