A Canon prime will always beat a zoom!
Seriously though you can often get two sharp primes for less than the corresponding zoom eg an 85/2 and an 200/2.8 instead of the cumbersome 70-200 f2.8 which handles like a brick!
Depends on what you do. Tracking moving objects is easier with the 70-200 II f/2.8 than with the L primes in the same range.
Sorry but have to disagree.
The 70-200 f2.8 is heavy - front heavy.
By comparison the other two are lightweight and well balanced.
If anybody wants a 70-200 then go for the f4 which is very sharp wide open unlike the f2.8 - very light and light on the pocket as well!
So you're saying that the 85 and 200 primes can track moving objects as well as the 70-200? I don't recall commenting on weight at all.