I want to move more into the sports photography field and recognize that first I need to gain some experience and build up a decent portfolio images. My current setup is a bit limited (20D + 70-200f2.8L) so I will be upgrading in the near future. The question is what setup to go for. I am reasonably sure I know what will work the best for me but I am interested in some comments on the options I am considering just in case there is something that I hadn’t thought of.
The two main options are keep my current body and by some longer fast glass, or sell the 20D and buy a refurbished 1DMkII and some slower glass. For the sake of the argument I have assumed that I can sell the 20D for around US$700 (6,500 clicks).
The options are:
1) 20D + Canon 300f/2.8IS L = US$3,899
2) 1D + Sigma 300f/2.8 (US$1,200 + US$2,599 - US$700) = US$3,099
3) 1DMkII + Canon 300f/4IS L (US$2,499 + US$1,149 - US$700) = US$2,948
I am leaning towards option three as I think that it is the best overall compromise. From what I have read the lens is really sharp and I gain the AF of the 1 series. The 1 stop speed drop compared to option 2 is made up for the better high ISO performance of the MkII vs. the 1D. I’m pretty sure that the AF on the 20D won’t really cut it so option 1 is out (even though I’d love the 300f2.8 lens). The price is also much higher but I could always reduce this to around $3,400 by looking at second hand glass.
Any thoughts?

