I have a 40D which is a great camera, it's burst (fps) is one of the best, and still an APS-C sensor which helps to get more reach.
Couple with a 17-55mm f/2.8 IS (superb, close to L-quality), a 65mm f/2.8 macro (very handy) and a 70-300mm IS I have 95% of any need!
I believe the 7D is a superstar and I am still thinking on upgrading, but there are few things that make me wait: Photokina 2012 is just 8 weeks away to see if they replace it (rumors say they will have a FF this time which I am not interested), but if they come with an APS-C sensor, 61 focus points and ISO ay 25,600; for sure I will go for it!
If not, guys, they are selling the 7D for $1,550 and less if you go refurbished.