All wonderful techniques, gentlemen, that you have obviously found work in reaching your goal. I would like to add that none will work if your partner isn't responsive. I have orgasmed by just have my breasts played and sucked on. On the other hand (heh, no pun intended), the best combo of usually guaranteed techniques have done nothing but get me sore and frustrated because, well, orgasm is a lot of work and I wasn't in the mood for one.
I would also like to add that no one man should stick to one thing through different partners. I really, personally, don't like the idea that what's being done with me has been done with others-a little variation, experimentation and mutual discussion goes a long way. I realize you do what you know works best, just saying keep in mind women, while our physiology is similar, want to feel unique to one another and special to our lovers, whether it's a one-time thing or a committment. I know, for example, anyone who'd go near my feet to rub them would risk a broken nose.