Glare is real. On really bright, high-viz days, I've definitely noticed it and had to shield my eyes while using a clear-skirt mask. Also, an older clear-skirt mask I have is showing some mold spores between the glass and the skirt, and while I'm sure it happens with black skirts too, I'm all the happier not having to see it. Along with the obvious yellowing with age of the clear silicone, I do prefer black, but it's a very minor issue when compared to fit. Get a mask that fits like a glove (sorry) and doesn't leak, and don't worry about the color of the silicone.