T Dodge:

Glass cannot be polarized. The only "glass" polarzed lenses are two pieces of glass with a layer of polarized plastic in between.

I like the view I get with gray lenses better than the amber, but I can't use them in as low of light conditions as I can use amber. They're too dark.

I use the cheapest, $15, glasses I can find. One, they work pretty well, though they can get uncomfortable if on all day, and two, I lose them and sit on them constantly.
Anything more than that would be a major wast of money for me .