Hey people, just wanted to see if I could get some help choosing a new lens. I have already decided to purchase the Sigma 10-20mm, but need something with a bit more reach to go along with it, but also something I can use as a good walk around lens (don't like swapping and changing lenses all the time). With that being said, I have narrowed it down to these three choices, which all have their up and down sides.
Canon 17-85mm EF-S f/4-5.6 IS USM - $759
Pros: IS and AF are both apparently very good and image quality is good across the entire focal range.
Cons: Slower then the other two choices and doesn't perform as well at wide angles. Not as much reach as the others. Price.
Sigma 18-200mm F3.5-6.3 DC OS - $447
Pros: Great focal range. Faster than the Canon. Image stabilizer works well. Price.
Cons: From reviews I've read the image quality lags behind the Canon and the AF is slightly less reliable.
Tamron AF 18-270mm f/3.5-6.3 Di II VC LD - $697
Pros: Even greater focal range. Better image quality than the Sigma (not sure whether it would be as good as the Canon tho). Image stabilizer works well on this one too.
Cons: AF not as reliable as the Canon. Some issues with chromatic aberration and distortion when zooming. Zoom creeps when not locked.
I suspect the Canon would be a better quality lens (in terms of image and build) than the other two, but the limited focal range (in comparison) and the fact that it a little bit slower is making the choice really tough.
Has anyone used any of these lenses or (hopefully) more than one of them? Would love some insight on what you found good and bad if so.