I've lost interest in some of the cutest guys if they behave a certain way. For example being plain rude, disrespectful, or creepy.
The most important quality I look for in a guy is personality. I have dated some of the hottest guys you will ever see, impressive, successful athletes training to be stars, a rich guy and at the end of the day that can mean nothing if they don't have a wonderful personality. To me, it's not about looks or status or what "sounds good"; it's about the deepest parts of his mind and soul as an individual.
Height and teeth. I like some one taller (At least 6'1 because I am 5'11) and I like perfect teeth on a guy. My mom spent money we didn't have to fix my teeth and give me confidence and it also made me picky on my partners teeth. I like nice ones.
The first thing I notice is height; I love tall guys. The second thing is probably whether or not he's funny. I think that personality always trumps physical appearance. It doesn't matter how good looking the guy is; if I can't have a substantial conversation with him, then there's never gonna be anything there. If he's funny and comfortable with himself, then we'll get along just fine.