hey guys, i recently broke my nikon d90 kit lens. the 18-55mm vr lens. so now im planning to get another lens. i want a lens that has a reasonable zoom range as well as a wide angle range. i was looking at the tamron 18-200mm and i am not sure whether that is good or not? what are you thoughts? please share with me? any lens with a fixed f-stop that you would recommend?