OK - here you go -
I'm on the water just about every weekend in the summer.
I have light color eyes - so I'm pretty susceptible to glare.
My current flavor are Serengeti Cetera Sunglasses with Polarized Lenses. Very good for cutting down the glare on the water - good filteration and optics
I also have a pair of Bolle Flip Polarized Wrap Sunglasses - that I use when fishing - they are much more reasonable - and I've lost a pair of these before overboard.
Probably the best bang for the buck is the Smith Undertow Polarized Sunglasses. Great optics - I had a pair of those that my son ended up losing.
Kaenon are good - Costa Del Mar and Maui Jim and great - but I wouldn't buy a pair that were not on sale.
I have probably 5-6 different pairs in a basket that we let guests borrow.
I do buy every so often at
Camping Gear & Outdoor Gear - Outerwear & Outdoor Clothing from Campmor.com
They seem to have some pretty good prices.