I wanna get the grey denim with the persimmon lense. I usually ride powder, with sunny days would this be a good choice? Also, i want something that will not fog up easily and it says these won't fog 'if you take care of them'...what exactly does this mean? I don't plan on scratching them but from normal wear and tear, will i have fog issues later on? Also with the extra lense, can I get a different kind of lense for when I go night boarding or will the extra lense be the same?