So I may have been wrong about this lens. Now that I've actually had time to try it out I think its a keeper. A couple things I've noticed is that its really hard to nail the focus when shooting hand held with a lens this size and weight. The poor reputation for autofocus is well deserved as it seems rather hit and miss and usually front focuses. But as for the image quality, I'll let the pictures speak for themselves. All the pictures below were shot as jpegs and taken strait from the camera with no editing.
First one was shot at f2.8 ISO 400, 200mm, handheld with manual focus
100% Crop
The duck was shot at F4, ISO 400, 200mm, handheld with manual focus
100% Crop
This one was shot at F2.8, ISO400, 135mm, handheld with autofocus