Hey Gresch,
I'm thinking about an update too. I use the 10D as my digital workhorse and a Hasselblad for when I'm shooting fashion type stuff.
My question for you is, it would seem with the L lenses and the enthusiasm that you share for photography, etc. Why did you opt not to go with the 5D instead? That's what I'm thinking about doing..
Yes, it's more expensive, 2x the price, but it's also a full frame image and is a bigger/better workhorse. (again, if your carrying two camera's with a 70-200 is L lens, your pretty serious.)
Is it because of the onboard flash ? I actually hate onboard flashes, I am trying a new technique of lighting called, strobist:
www.strobist.com
It's a relatively inexpensive way to get your flash off camera and give a much more dynamic image..
Here is some of my work: (sorry about the poor quality scans. Most of my work is still shot on film and my portfolio lives on paper, not so much on digital.)
(shot with 10D)