Years ago I was shooting with my old friend, the 40D.
In 2009, I ended up putting my old friend away, which I still have by the way, as I upgraded to the 7D. The Pioneer of Canon Top of the line AF system. I always wanted to buy a full frame 5D Mark II. Unfortunately the 5D Mark II had the older AF system that of the 40D. So I bought another 7D. Once the 5D Mark III was introduced with an improved AF system based on the 7D, I knew a Mark III was on the horizon. Used the 7D's heavily until a 5D Mark III was under the Christmas Tree in 2013. Used the Mark III almost exclusively since then. In January this year, I bought a second 5D Mark III.
Shooting a ton of Baseball this Spring, a few times I took along a 7D for the "extra reach". In great light mo problem. However in lower light and pushing the ISO's, the 7D just could not compare to the 5D File.
So now the idea of adding the 7D Mark II has really been entering my head. More frames per second and better ISO performance compared to the original 7D, the 7D Mark II may have found a need in my arsenal.
Similar body design, button layout and shooting back and forth between the 5D Mark III and the new 7D Mark II, I am now selling myself.
It may come down to which one you may want to buy........First!!
So let's look at both.
5D Mark III.
Great deals now. Even better when I bought mine in late January.
Of the bat, if you can, I would recommend buying the 5D Mark III Kit. Either the 24-105 or the newer 24-70 f/4 L IS. This will cover your full frame Standard Zoom coverage on your full frame which you currently do not have.
7D Mark II.
Less Money compared to 5D MarK III. However like most cameras and everything else, the price will drop even more. Additional savings could be used for more glass.
Canon 5D Mark III (x2), BG-E11 Grips, 7D (x2) BG-E7 Grips, Canon Lenses 16-35 f/4 L IS, 17-40 f/4 L, 24-70 f/4 L IS, 70-200 f/2.8 L IS II, 70-200 f/4 L IS, 70-200 f/4 L IS Version II, 100-400 f/4.5-5.6 L IS Version II, TS-E 24 f/3.5 L II, 100 f/2.8 L Macro IS, 10-22 f3.5-4.5, 17-55 f/2.8 L IS, 85 f/1.8, Canon 1.4 Extender III, 5 Canon 600 EX-RT, 2 Canon ST-E3 Transmitters, Canon Pixma PRO-10 Printer