I own a Canon EF 70-200mm f/4 L IS USM and I must say it's an absolutely amazing lens, everything is perfect with this one and I love it. I use only L lenses on my camera and between L and non-L it's a huge difference. Aside from the build quality, fast focusing, ergonomics, the IQ is greatly improved, it's like night and day. Besides this, I only would go for lenses with stabilization on them. At that reach, of 200mm or more it's very difficult to shoot without IS. You would need to bump up the shutter speed and ISO at the same time to compensate the loss of stops. The 70-200mm f/4 L IS USM has a 4-stop IS that really works brilliantly.
I only talk about what I have, I can't pronounce myself with the other ones, but also depends on what you are planning to do. For people, for subjects that aren't so far away, a 70-200mm is perfect, but if you're planning wildlife for example, I'll go for something towards 400mm.