yep - I'm sitting here thinking about the 40D.
In my mind, there is no question.
The 40d kit comes with the 35-135mm f3.5 Image Stabilizing lens.. The Stabilizing is worth 4 F-stops. Plus, the 40d has the self sensor cleaner, where-as the 30d does not. 40d is 6.5 fps, 30d is 3fps.
I don't remember what the 30d kit has for a lens but it's nothing like the 40d's.
The 40d at $1499
The 30d at $1299 ??? (can't remember)
no brainer for me.