have to go with the serengetties. Awsome protection for the eyes, no probs with colour perception or visiual clarity, heated wind shields or colour screens. (well not on the metro anyway) Had a little problem with the arm in my some 18 month old glasses and the sent me new ones free! They are not what you would call scratch proof but scrach mush less easily than my old raybans for instance. but I have given mine a hiding over the years and wont trade them for anything else.
I thought crows feet and peppered hair were the signs of aging gracefully....doh out with the spack filler!!