That is a really good deal on the Kaenons. I've worn the Solar Bat Moss Greens, Kaenon Y-35 and Copper C-12 lenses. They're all good lenses but the Kaenons really are impressive. They are very light on your face, the lenses are very durable, and the visibility is impressive.

Like Dan said, the Y-35 are a strictly low light lens, like you can practically wear them in the dark. In bright sun they will burn out your eyes so they're not a good all around lens. The C-12 is better all around but not so good in low light. The Solar Bat moss green is very good in bright sun but poor in low light. Around sunrise or sunset, you really can't see a darn thing with them.

What you realize after a while wearing sunglasses is that no one lens will be perfect for all conditions. Any time I fish now I bring the Y-35 for low light and the C-12 for bright sun and I just switch between them as needed during the day.

Kaenon Kore review:
http://www.calfishing.com/reviews/sunglasses/kaenon_kore/index.html

Solar Bat Moss Green Lens review:
http://www.calfishing.com/reviews/sunglasses/solar_bat_bat_eyes/index.html