Thanks ECRunner! I'm leaning toward the blue. I've heard blue are best for "ON" the water, aka boating in bright BVI sun! But the gray are actually better for seeing "INTO" the water. Then I heard while that's true about the gray for blue water, the blue lens is better in inshore water. Did you try both when coming into moorings like Jost's White Bay or other areas with reef? Also, glass or the plastic polycarbonate? So many decisions!