@Harley - Congrats on the 7D. I was in a similar boat with my T2i and have been weighing 7D vs 5DMKII for about 8 months and I have flip-flopped more than most politicians. The rumor and promise of new bodies also seriously made things difficult... but in the end I just bit on the 5D and even though in 9 months both the 7D and 5D MKII will likely have upgraded bodies, the 7D or 5DMKII will both be a substantial upgrade, and at worst, even if I sell and say walk out $300 or so less than what I paid in, that still winds up being a fairly cheap rental over say a year.
So if I find myself come next holiday season jonesing for a Black Friday or Cyber Monday sale on the new latest and greatest, it just means that perhaps I have paid $25 or $30 a month for a better body.
I am almost thinking of my 5DMKII purchase like a lease. I also got a great deal on mine, so think if I sell in a year, I might be looking at more like $20/month.
There will ALWAYS be a better camera on the horizon. At some point it makes sense to upgrade, realize that when you do finally make that decision, the camera you were waiting on will be announced a week later, but be happy in your decision.
Enjoy the purchase.
+1 on Shermanstank on the Battery Grip. I can't go back to a camera without one.