Hi, I need 3 49mm filters for 3 lenses. I primary use the just for protecting the lens. I normally buy hoya's off amazon. http://www.amazon.co.uk/gp/product/B003YLYM2Y/ref=oh_details_o06_s00_i00?ie=UTF8&psc=1 Is it worth getting some different ones? I'm not unhappy with these just as i'm buying 3 thought i'd check first. thanks for any advice.