I use Radians Rad-Infinity glasses--mostly because they fit my head, the lens covers not only the front of my eyes but the sides as well with enough "above and below" coverage so that shrapnel won't angle up or down into my eyes, and they have the ANSI Z87.1+ rating for protection.
And they cost less than $5, which is a good thing because I destroy eyewear on a monthly basis. [sigh] It is ridiculous, but any glasses I use last at most about 3 months, with a normal life of about 1.5 months. Which explains why I don't bother to buy expensive eye pro...I normally buy them in packs of 12, which gives me a bulk discount.
I use the ambers for outside (the color shift makes bright daylight survivable, and the contrast enhancement is useful) and clear glasses for indoors. (And I use the blue mirrored ones for sunglasses.
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Brand-wise, I don't see a whole lot of difference between most kinds until you get up to the $120+ range...which I'm not going to pay. So pretty much any brand is good as long as you get good eye coverage, and the lenses stay un-fogged.
As for the color/tint.....like I said, I like the ambers. (Even though they don't look as cool as mirrored lenses.) Most light gets transmitted through (and while I like polarized for sunglasses, I WANT most of the light to be transmitted for shooting glasses so I don't use polarized lenses), the color shift for some reason makes even bright days not bad for me outdoors, and the increase in contrast is helpful, and works great along with a fiber optic on the front sight.
A useful commentary on relative tints in general:
http://blog.safetyglassesusa.com/wp-content/uploads/2011/06/Shooting-Lens-Tints.jpgI note that I always wear eye pro when shooting. (And reloading.) I like my eyes, I prefer to keep them in working order.
(I also wear my eye pro when dryfiring my competition gun, but that isn't because I'm worried I'll shoot my eye out, but instead because I want to get used to the sight picture/tint I'm going to have in the middle of a competition.)
