My personal choice would be the 70-200 f2.8 IS, but then I wake up.
Julie ... once you do decide to make the move you'll wonder how you ever lived without it.

And then there's the VUer who said here that he got talked
into buying that lens and brings it along but doesn't even
use it.
If Julie's interested she should probably speak to some of her photographer friends on the coast. She works with some great ones.
They can probably be of more help than those of us on VU.
"I've ditched the 70-200 as it's too heavy."
-Jeff Ascough-
May 22, 2007
I think you've heard of Jeff Ascough, haven't you Sparky???
He was just named "One of the Top 10 Wedding Photographers
In The World" by American Photo magazine.
Ditched = stopped using. But, yea, pay no never mind to VUers.
Listen to the "great ones". 
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"We'll always show up at the wedding with a gift bag for the bride. Inside we have these incredible fuzzy slippers in the teal of our branding."