I love both cowgirl and doggy as well, I always cum way too quickly in mish so like to finish with that.
Cowgirl is really good if the girl is into it and you get to watch her grind while you thrust
I find doggy a little awkward at times due to the different mattresses etc, so standing works great.
Having said that I guess the edge of the bed position with her legs at your shoulders or spread is my favourite
I'm pretty vanilla when it comes to positions