BlueGemFox - I'd recommend trying on some mens jeans in a store. My "rule" for pants (for me, anyway!) is to get styles such as slim or slim-straight, no bigger. Since my hips are wider than the average guy's and yours probably are too, if I were to get a style such as "relaxed", that aren't fitted somewhat in the legs, then my legs would look bizarrely large.
I'm sorry, this is kind of hard to explain, haha. You don't want to look like you're swimming in your jeans, or that your legs are disproportionately large compared to your upper body. I think it sort of makes your torso look shorter because of how large your legs would look in unfitted pants, you know?
My favorite pair of jeans are skinny jeans and I feel like they feel and look just right on me. They "show off" my legs, but not in a bad way. They aren't skin-tight, so they make my hips appear to be just as wide as my upper thighs. Slim style jeans and some pairs of slim-straight have the same effect.
Obviously this won't be the same for every guy, but I've heard others give this same advice and it works well for me. I've got CRAZY skinny arms, so when I wear my skinny jeans that are more fitted to my body I look at least a little more proportionate.
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WOW, this turned into a rant. Sorry! I hope it made sense. And thanks, BlueGemFox!

I'm always worried about passing in pictures since I'm the opposite of photogenic.. oh, and I think that's the oldest age any stranger has estimated me to be! Haha. I feel like I look 14 even though I'm 19. No one ever thinks that I'm an adult.