Need inputs/suggestions related to Telephoto Zoom lens for 60D

Hello All,

I currently have the following setup : Canon 60D + EFS 15-85 Lens.

Now, I'm looking for a Telephoto Zoom Lens to complement this existing setup.

Main purpose of this lens : Landscape, Wildlife, Sports photography

I did review EF 70-200 f2.8. This is perfect, but out of my budget.

What is your input on EF 70-200 f4 and EF 70-300 F4-5.6 L?

Any deals currently on these lenses....

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Cheers!!!
Srinath.