in my humble opinion ( and it is humble lol )
i believe that if a man and woman are to be really good together in bed then forget size, shape, longevity,hard,fast,slow,sensual, none of it means anything if there is no connection in the mind,
its a fact that every feeling anyone has comes from the brain, so if you wnat your body stimulated to the point of an orgasm then it starts in the mind, what i think you need to find is a soul mate a best friend someone you love like a child loves its parent un-compromising, complete,
if you find this then i would put good money on the fact that you will have orgasms on a regular basis,
too many people think its all about just fucking and forget they have a mind this is where true pelasure comes from.
these are my words of wisdom for the day lol
take care all of you