I am kicking around the idea of an ultrawide lens for my 7D. Does anyone have experience with the Sigma 8-16? Right now I am leaning toward picking up a Canon 10-22 before the rebates end, if I do anything at all, but I am still a little tempted by the extra 2 mm/12 degrees from the Sigma. Similar to Dr. Croubie and kolorange, I have also been looking at the Sigma 10-20 f/3.5 and f4-5.6 and the Tokina. I am probably not going to wait for the new Tokina as I am used a trip I just booked in March as motivation for the lens. I would be using the lens mostly for landscapes.

Thanks,
Brant