After having my last pair stomped on to the point that we couldn't even find pieces left over at a concert, I personally went with some stouter metal frames. I suppose they approach emo trendy thickness, but I like my shit to be burly and last a couple of years. If that is something that appeals to you as well my frames are oakley's and look fairly unobtrusive and non dousch baggy.

I usually get my lenses replaced every two years so I don't really spend a lot on coatings and whatnot, just poly-carb. I doubt you are terribly rough on the equipment though...

And I don't know if they have this but some kind of coating that's anti fogging would rule. If so please get it, because it would of course rule, and you would rule. Ahh to be able to walk into a warm room from the cold outside and still be able to see, Just Thing About it MAN!