I enjoy using as many positions as possible, especially during the 2-plus-hour play that I prefer. While fucking, though, I personally prefer standing doggy style--I not only feel more in control than with regular doggy style, but I use more of my body and thus don't tire out the core of my body as fast. It also gives anyone watching a sense of needing to submit to my cock and is better at allowing me to watch myself fuck totally naked. But, what is probably closest to describing when I fuck the deepest is "deep impact," when we're facing each other, his legs are in the air, he's usually backed against the headboard, and I'm my knees, legs spread apart, fucking very deep. Once in spring 2007, I fucked a bearded, hot, red-headed 33-year-old hard mostly like that at the foot of my bed until I came deep in him after half an hour of very hard & deep fucking; with my cock inside him, he said, "May I cum, sir?" I said yes and he jacked off with my cock still in him. I'll never forget the look on his face that told me he had just gotten a lot more than he had ever had or expected, especially from someone 21 years older than him! :D We tried several times to meet again but couldn't work it out between our schedules.