Great Concept but Poorly Executed

I bought this lens while on a trip to New York. It looked like it had a perfect range for a walk around lens. My other Tamron Lens (11-18mm) works great, so I took a chance. After seeing the pictures on a computer, and comparing with another zoom lens at the same 200mm focal length, the Tamron was way too soft. It cost me 160 bucks to return it, but it was either that, or give it away. I am going to go with a Canon 24-105 f/4L IS USM. It will cost much more, but I won't be irritated when I look at the pictures.