From a local shop, today I bought a Promaster Professional Digital HGX polarizer filter, 49mm size, to use with my DA Limited lenses. http://www.promaster.com/products.asp?product=DHGXCPL It was $90, cheaper than what this website sells it for. (Cheaper than Amazon, non-existent at Adorama and B&H.) This is the higher grade Promaster polarizer, the standard grade was just under $40. This "Pro" level has a lower profile ring, and an allegedly better coating system (reflections and surface grime). For another $25+ I could have bought a B+W polarizer of the same size but I wanted to preserve some $$. Anyone have experience with these Promaster Pro HGX polarizers?