Well, I'm going to head up to Oshkosh this year, so I want to upgrade my shorter range lens. After reading reviews and checking out prices, I've pretty much decided on this. But I figured it couldn't hurt asking on here... Has anyone had any past experience with this lens? And also, does anyone have a suggestion for another lens (preferably somewhere near 17-85mm, price less than $600)? Thanks in advance for any comments/suggestions.