Its a touch choice to make, I like the IS that the Canon 70-300 has and its useful but its not very fast at 300mm or even 200mm
Ideally yes, I would love the canon 70-200 2.8 IS but then its out of my price range right now.
I thought that if I buy a 2nd hand sigma, sell my almost brand new canon 70-300 and then if I choose to sell the sigma later it wont loose much money on it.
Is there a 70-200 F4 IS? that might be an option but its probably the same money as the Canon 70-200 f2.8 without IS which would be a better option.
Ugh. I only really want to spend £400..