I've got several Tifosi, and bought a 4 lens Serfas (polarized, brown, clear and yelow) that I also like. Polarized lenses work best at a 90 deg angle to the glare source; staring into the direction of the sun you will be using the tint of the glasses but not the polarization. So I use the brown tinted ones or the polarized and they work fine until the sun is setting and I am looking in the sun's direction and shadows are long. Then I find they are too dark for all but the sun itself, which I am not going to try and stare down anyway. So I use the yellow tint which makes it easier to see in the shade on those evening rides (the sun may be bright, but what you are seeing in front of it is not and may be in shadow.) The yellow is also good on overcast days, to increase contrast.
Tzvia- rollin' slow...
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