I really like the Wiley X Saber. I've worn them for about 10 years. The lenses switch easily and you only need one pair of prescription lenses. I keep dark, yellow and clear lenses on hand for whatever need I have. I've replaced various parts of the glasses like lenses and the nose piece, all of which can be found for cheap on places like amazon or ebay. I also like and use the ESS model listed above, but I find this style easier to change the lenses and overall cheaper.