Best telephoto lens for canon ef?

Here is what the site says about that.

From Canon EF 70-200mm f/4L USM: Canon EF 70-200mm f/4L USM: A zoom lens by Canon for Full frame cameras, 70-200mm f/4. A light L telephoto without stabilisation, a classic used buy.

From Canon EF 75-300mm f/4-5.6 III: Canon EF 75-300mm f/4-5.6 III: A zoom lens by Canon for Full frame cameras, 75-300mm f/4-5.6. A very common cheap telephoto: soft at 300mm and not stabilised.

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