Welcome Elveneye7;


First....as you read more about photographyand become more experienced you will discoverone ofmanymantras in photography; that no one lens will do it all.


With that said, I suggest you read Bryan's (this sites owner) reviews concerning lenses, specifically the 18-200.My take away from your question iswhat Bryan said about the 18-200 ($595 at BH) though a little over your "around $500";


"Some people want to capture all of their memories and experiences (and still have very good quality images) without the burden of carrying a backpack full of lenses (and a tripod). And there are times when carrying a backpack and tripod is not practical or even possible. For these people and these situations, the Canon EF-S 18-200mm f/3.5-5.6 IS Lens is a great choice - a great travel lens. Such was the situation with my previously mentioned trip to New York City - business was the primary purpose of the trip. The 50D and 18-200 in a Think Tank Photo Digital Holster 20 went with me everywhere and were not a burden. I came back with some nice images from the trip."


Also read the reviews on thethe 17-85 and 18-135 reviews (both about 450 at BH).


Good luck and have fun


Bill