It may be helpful to have different threads either for region (i.e. Northwest, Southwest, Northeast, Midwest, etc.) or perhaps by climate. I know that in general the important factors when selections sunglasses are based on climate. Someone in Miami or Los Angeles is probably going to need darker selections than someone in Anchorage or Eugene. Also determines how much you sweat and how much your lenses fog up. Another idea might be by activity. Maybe discussion about good lens types for fishing, mountain biking or hiking, golfing, driving, etc. Just a thought.