Jeff Spirer , Sep 05, 2011; 12:38 p.m.
You keep asking about lenses. First of all, it isn't the lenses that make the photo. It's everything else, the hard stuff that can't be solved through "which thing should I buy" questions. Second, get a used 18-200 and use it until you know which focal lengths you are finding useful. Given that you are asking these questions, I don't think the slightly inferior image quality of a zoom like that will matter much. Find out what works and buy then.