Fuel Cells are my go-to shades 365.25 days a year working in the Horticulture field at a greenhouse. I'm a big framed guy so Gascans look goofy on me, plus I've noticed trying on both Gascans and the Flak 1.0 - I can see the bottom of the lens in my fov which cuts off about 15% of my view, veerrrrry annoying. When I put on Fuel Cells they simply shade out everything, no obstructions, just shade. I don't need to exaggerate or brag about Oakley's lens quality because we all know it is top notch - one thing I will note however I was not impressed with the non-polarized warm gray lens color. It felt like a generic unimpressive lens, so from personal experience pick something iridium coated, prizmed or polarized... or a combo! In total I own five pairs of these in all different colors and lens styles - I will continue collecting these so I have a large assortment on hand when/if they are discontinued.