I just got the shorts in. They fit perfect. They aren't too loose around the thighs and aren't too tight either. When they are worn at my waist they go to right above my knee which is the fit I was looking for. I think you should go with a large since we are similar.
I am a size 33 waist. I wear a medium in Nike's dri-fit Sunday SB shorts. Should I get a medium in these or size up to a large. I have bigger thighs from playing football.