the 18-200 was my default walkabout lens for a couple of years, but was sold when I moved to full-frame. I think others have summed it up well, its a cracking lens for the ££ - the new VRII version is supposed to be even better.
Nowadays, its the 24-70 f/2.8 and the 70-200 f/2.8 all the way -...