Is there a better brand, and a worse brand? Usually I've stuck with Hoya thus far because I heard they were pretty much a standard, but I feel like their Pro 1 digital line is pricey for something like a UV filter, around $75. Perhaps it's just sticker shock of going from 52mm filters to 72mm. I assume because I have a wide angle lens in the Sigma 17-70mm I would need a low profile filter to not get vignetting. The UV would only really be to protect the lens, do you guys think it's worth it? The debate seems pretty wide open about them effecting picture quality and the like. I've very careful with my camera's, but let's be honest stuff can happen. I don't really want to replace a $400 lens. Or should I save my money and get a Circ Polarizer and ND now instead.