Another vote for Smiths...I have a pair that actually has "locks" on the arms, I can twist them, which opens up the front and the lenses come out...and then you can put in either a different color polarized lens (there are three or four), or put in replacements if you scratch 'em.

I have another pair of Smiths that I love, but the lens got a scratch in it right in the middle, and that's it for them...no replacing 'em.

Fish on...

Todd