I usually buy cheapo polarized sunglasses wherever I can find em. Until 6 months ago I lived within range of the Bass Pro home store with the clearance outlet next door, so it was easy to find polarized glasses for under $10, I haven't had to buy any since then. I do have one pair of Smith Diablo sliders with 3 sets of lenses, but I sure didn't pay the over $100 MSRP. What I really don't care for about them is that they, like so many of the other "designer" sunglasses don't have polarization. That's a biggie in my book and I won't do without it again, it just makes too mig of a difference to me. I've heard good things about the Rudy's, but I'd have to pick a pair with full frames for more protection for the mountain biking I do.
I notice that the lenses you picked have a "hydrophobic coating". Does that mean we should all be out seeing what wax beads best on our sunglasses, or should we skip that and go for a sheeting effect? :spot