Well I got my 17-55IS today and a 430exII flash.
I must say it is nice to be able to handhold shooting with slow shutter speeds. I really loved my 24-70L but I am thinking the IS might make me like this lens just as much. Also got a 2nd flash..its pretty cool to be able to use the 7D to fire them both off..now I dont need to get myself any studio lights if I want to do a little shooting that way. the 7D is growing on me.