Hi Everyone!

I have just taken delivery of a 7D...and am really looking forward to doing its amazing features justice - eventually.

What I'd like to know is which lens is your favourite "walk-around" and why?

I already have a Canon 10-22...a Canon 70-200 IS...and a Canon 50 1.4 - and for a walk-around was thinking about a EF-S 17-55mm f/2.8 IS...or a 24-105 f/4 L...they are very similar in price.

Thanks in advance for your advice...I really appreciate your insight.