Don,I contemplated the 24-70... But, being that I have a crop body, I picked up the 17-55 EFS lens (which is essentially a 27-88) and I love it. Looking forward to pictures!
What body do you shoot with? I have a 40D and LOVE it... I know I will upgrade to FF someday, but the 17-55 really holds it's value, and the IS really helps indoors, even at f2.8.
Don