just got back from a trip to Puerto rico for my sister's wedding and rented a 10-22 3.5-4.5 from unique photo. had a great time with it and got some pretty good shots. 135 out of 450 to be exact. so now im a shopping around for an ultra wide zoom and its between the canon and the tokina 11-16 2.8. the wider aperature is appealing to me as is the price. the canon is pricier but I am already familiar with it. I was wondering if anyone had any first hand experiences with both and could possibly offer some insight/expertise into their experiences.