bolle contour safety glasses from screwfix £10, they have a bit of a tint, but are the best value for money glasses ive ever used, why would you need to spend more, they do exactly the same job, as more expensive glasses ive had previously, and when you drop them and scratch the lenses, for a tenner its not the end of the world.
You dont specify a budget, but my Alpina Twist Four 2.0 VL+ glasses are awesome. They tint almost immediately in the sun, enter the trees and they’re clear again. I’m a contact lens wearer and these things cover a large area with no dirt/flies getting in. They sit very close to my eye-brows so I can get some sweat build up but havent had any steaming yet.