Fast lens for less money...
I'm looking for recommendations for a lens in the 70-300-ish zoom range for day time model aircraft action shots usually taken against a green (grass/trees) or asphalt background that gives excellent image quality, is a step up from my Canon 55-250 IS I lens, but doesn't cost nearly as much as Canon's cheapest L-zoom (70-200 USM) on the used market ($500-ish).
Most of my shots are of the model in a hovering state, but some are panning shots at high speed.
My output is to print for a magazine.
Any advice is appreciated from you pros!
Canon 40D / Canon 55-200 IS