I have the Canon 18-200 mm lens and find it a wonderful all round lens when you don't want to take specialised lenses with you. I used it on our last overseas trip and found it quite adequate for the photos that I wanted to take. It is also light and easy to carry around. You can look at my holiday snaps on Flickr if you wish.

http://www.flickr.com/photos/8364607...7612132435952/