Addendum Okt.2011:
I have these sunglasses now about 1 1/2 years in regular use.
Use them meißt when driving in bright sunlight, and am reasonably impressed.
Except for the inscription on the side of her condition even as the first day ... no sagging, no scratches (although they had to go through quite a bit).
As well as the customer service has responded very well to an initial shortcomings, this product receives the full 5 stars from me.