Which of the following would you go with? Canon EF 28-135mm f/3.5-5.6 IS USM Image Stabilized AutoFocus Wide Angle Telephoto Zoom Lens or Canon EF 28-200mm f/3.5-5.6 USM AutoFocus Wide Angle Telephoto Zoom Lens The first has IS, but is a bit more pricey (obviously). The second has a bit more zoom, but no IS. Both are roughly in the same price range. Anyone have experience with either or both?