The photochromics work well on the road but on the trail (mountain biking) they don't change tint as fast as you're dipping in and out of the shade. It can cause the trail to suddenly appear too dark when riding at speed.You want the glasses you purchase to fit well i.e., not slip down your face when leaning forward in the cycling position. That happened to me with Oakley Flak Jackets. I bought the smaller Half Jackets, and that cured that problem.Also, you want the glasses to sit high enough on your face that you view through the lenses and not into the top of the frame when you in the cycling positions, particulary in the drops. The only way to test this reliably is with you, the glasses, and the bike.I can't make any recommendations for you; there's a whole world of glasses out there at all price points.