If you want faster glass, you might want to consider the 135mm f/2.0l usm. It more or less covers all three of your interest IMHO. If you want a zoom, I suggest waiting on the 17-55 or 24-70 and instead buying an IS version of the 70-200 f/2.8. There are two versions of the 70-200 f/2.8 (I & II), and you can decide which fits your budget.


brednan