How do you find the Pentax DA 55-300 compared to the Sigma 70-300? I've got the Pentax and I'm reasonably happy with it. Used it to shoot my 7y.o. son's first soccer game using AF.C. (I usually do static stuff so AF.C was interesting.) It was a lot of fun, but next time I think I'll use a tripod. Helps to keep a level horizon.

Dan.