I've had these for a year - Rootbeer frame/Hcl Bronze Lens.  They provide total sun coverage for the eye in bright sunlight.  Also are not too dark in lower-light conditions (shade).  These have distortion-free lenses that make colors look more vibrant.  There is absolutely no pinching on the temples.

Only suggestion for improvement is to make the frames a little stronger, but mine have not broken because I'm careful with the glasses.  If you purchase these, you have to be a little more careful than with other types of lightweight frames such as titanium frames.  These are so light, you forget they are on your head.  Strong recommendation is to purchase if you take care of your things.  If you want to tend to be less than gentle with sunglasses, these might snap easier than other models.