I like classy dressers that always look polished and dress their body well. It's rare that I see a high school guy who dresses to impress like that, only two of my guy friends know how to dress really well and it would be great if all guys knew how to or took the time to dress well.
I prefer guys who don't care. I like wearing high heels and tight dresses and bedazzling my body with jewels... but I like simple guys who just stick to jeans and a t-shirt. If they can effortlessly look attractive without trying to impress anyone... that's a major turn on for me.