We cruise around town wearing the HD shades. Initial reactions, vision is crisp and clear. After a few minutes I switch to my regular pair of sunglasses for comparison.
My regular shades are of a darker tint. The smudges and scratches indicate that they've seen their fair share of stories.
It becomes quite apparent that the HD sunglasses provide better quality and clarity. However, the yellow tint doesn't seem to do as well when blocking the suns rays. For the money, not a bad pair of sunglasses, but I think I'll keep my original pair.