Originally Posted by DARK_M3
Thanks. Regarding the above question however... ?? What should I do man!
I'm partial to the 70-200mm Ls, either the f/2.8 and the f/4, which I own.
Your three bodies are showing their age and you're missing out on the high-ISO performance of the last two generations. I'd institute a long range plan to buy a 5D MkIII. I'd sell the two oldest bodies and buy the f/4 70-200mm to save some money and take advantage of the high-ISO performance of the MkIII.
Seeing your investment in fast primes, I suspect you'll find my suggestion uncomfortable, to up the ISO performance of you body and go with a slower lens. When I bought my 5D MkII in late 2008 it changed my whole perspective towards fast primes vs. slower zooms.
It's only money...