A couple of years ago I bought a Canon 7D. I loved it to pieces but unfortunately had to unload it in a financial crunch with plans to buy a FF camera later when the opportunity presented itself.
Shockingly, a local professional football team liked some of my previous work and has issued me a league-approved field photography pass for the entire season...
The lenses in my arsensal currently include; Canon 70-200 f2.8 IS, Canon 100-400l, Tokina 11-16 f2.8, and a few other units.
I have specifically have three bodies available to me right now that fit within my budget:
-brand new Canon 5D Mark II
-brand new Canon 7D
-used Canon EOS-1D Mark III w/ only 2000 actuations
The obvious benefit of the 7D is longer reach, sophisticated focusing system, more pixels and terrific FPS... and the 5D Mark II provides an expansive sensor though a middling autofocus system....... the wildcard here is the Canon EOS-1D Mark III... it is almost brand new, has a terrific build and focusing system, a bigger sensor than the 7D, etc... I know the sensor only provides 10mp of resolution, but frankly I think that might not be hinderance considering most shots will be web-published or magazine/newspaper printed....
These are the ONLY three cameras I can consider and I would LOVE to hear the opinions of people on this forum.... the Canon EOS-1D Mark III is the wildcard for sure but I am leaning towards it because the sensor is larger than that of the 7D.... I love the 5D Mark II but worry about the speed/autofocus since this camera will be relegated strictly to sports duty....