I'm not sure... as my friend quail says, its kind of a "dick blur"

I don't know if I can give any one of them the "best" title.
Like a fine wine, they all have flavors, textures, complexities ......

That being said, here's a few memorable ones, in order of last appearance

The night after the Blood Drive;
That one time, with that other girl, who said "I don't think I've ever had a full body orgasm before";
Different time, same other girl, where I started the energy loop between her solarplexus, my right hand, my left hand, and her shoulder, and she started vibrating, then shaking, then rocked the entire bed with a screaming orgasm;
This one time ... at Burning Man ... Two years ago, when we kept our camp awake until dawn. (poor BoyChaos didn't get any sleep that night, at least I wasn't in his motor home);
This one time, at Ren Faire, when half my body when numb;
That other time, at Ren Faire, when I was in his motor home, and he came back and said "Look! That's enough! I haven't been able get in there for three hours! Clean up and get out!";
This one other time, at Burning Man, when this girl wandered into my camp after the burn, and I kept her up till sometime after dawn.

MMmmmm, memories.
Thanks for the question.

there are a few that stand out

NYE 1999, I ate 5 hits of ergotimine and left my body and became a shinto shrine on a hillside in Japan

One time, with a horrible asshole I used to date...I came as soon as he was in me

and this one really nasty 4 way I had when I was 22.

But I have alot of really good sex all the time, so even those these stand out, they dont stand out alot.

Hands down matt is, and not just because he is my current beau, we have ridiculous chemistry together. Credit should also be given to both of our previous experiences bringing us to where we were when we met, but yeah, from the first moment we kissed it was on and it was hotter than anything I had ever experienced before that.

And now that we are just over 7 months into this lovely relationship, it just keeps getting hotter and hotter, and that blows me away and makes me a very happy girl. Last weekend was seriously beyond anything I had previously experienced, the passion, the intensity, the... yeah, you get the idea.

I am a very, very happy girl and I am so in love with and so hot for my guy :)

One of the wrongest joke evar:

Q: What is making love?
A: What your girlfriend is doing while you're fucking her.

There have been a few that started demure, soft and loving... then picked up the tempo to fierce, passionate and hot... eventually combusing in a shower of clothes, trapeese, lube, midgets, rope, monkeys, drugas and of course -- bacon.

Yeah. Bacon. I loved those the best...