There's one position the does it for me nearly every time. I get super tight, too, so it's almost guaranteed that we're both going to pop at the same time. Unfortunately, getting super tight also tends to result in more soreness afterward.. but a day or two off and I'm good. On top it's a little more difficult, but as long as he doesn't get pushy and interfere with where I'm aiming the stimulation, it's pretty regular. I've only been able to orgasm from intercourse with this partner, though.. no one else has even come close. Something about the extreme level of attraction and sexual compatibility, I think.
Now, anal sex.. jeebus. Nothing like it in terms of orgasm strength for me.