Hi guys, I've got an Olympus C-8080 and I am thinking on getting a UV lens filter as well as a circular polarized filter, but Ive got two questions: 1) Is Sunpak a reasonable brand? Can you give me a couple other names to look into or are they all pretty much the same? I'm no professional, but I am an enthusiast. and 2) When is an appropriate time to use those filters? By that I mean what lighting/environmental conditions are those filters designed for? Is it the kind of thing where I really should keep the UV filter on all the time, regardless of conditions? As an example, when I was at an aquarium (more specifically, the aquarium in Gatlinburg TN), very few of my picts came out because of glare or reflections coming back from the all the glass. Not to mention the place was dark. Would one or both of those have helped?