I'm looking to buy some sunglasses. The darker the tint the better because I am a lifeguard and it gets very bright, and squinting becomes a pain if I have to do it for an entire shift. Polarization is a big plus because it takes the reflections off of the water. Is there anything anyone recommends? I'm willing to spend into the $100-150 range, but cheaper is always better I'm basically looking for a pair that looks nice and is going to hold up well. Thanks in advance.