Rubar,

Welcome to the forums!

You mention what gear you are considering, but you don't mention what will you be shooting? I have owned and shot with the 7D and 100-400 mm combo for a couple of years now. It is a great combo for wildlife photography/birds and even some landscapes. I once considered one of the 70-200 mm lenses on the cropped sensor 7D (same as your 60D) and was adviced that it is a bit of an odd focal length (equivalent to 112-320 mm) on cropped sensor bodies. On a full framed sensor the 70-200 covers most of the standard portrait range. On a cropped sensor body is barely covers any of the standard portrait range and is instead a short telephoto lens, a little long for indoor use, a little short for outdoor use. I believe I've seen this combo used by forum members for close range outdoor (backyard, park, etc).

But, that may be exactly what you want. So it gets back to what you are planning to shoot.