[font color=\'#000000\']All true.
I own all the aformentioned lenses and a 10D. In order of usage...
1) 17-40, probably used 40% of the time
2) 100 macro, probably used 25%
3) 70-200, probably used 25%
4) 50 mm, probably used 10%
5) 28-135, idle at home, but I keep it in case I ever do another walk-around session.
I tend to shoot with a kit of lenses in my bag and use a tripod. That makes the 28-135 less needed. But thats the lens I started with. I found myself want wider, longer, and sharper. But, the IS works like a charm for walk-around service.[/font]