Like Ron White said,"I'm between 6'3 to 6'6 depending on the store I'm leaving", and I've yet to be with a woman where height was a major issue. I've always had a particular fondness for the short, 5' to 5'4 ish Rubenesque ladies. The only positions for me that can be tricky is cowgirl, standing doggy or 69. In 69, that just means they have to sit back and ride on my face a little more
and that is something I can sooooo handle.