I am upgrading and i have the options of the above cameras. The 7d and the 5dII. I used a friends 7d and was just tickled with the new AF and zone of focus that feature alone sold me. My question is FF really worth the upgrade cost of another 800 bucks over the 7d. I am more than pleased with the noise of the 7d but then again i am coming from a 50d perspective. I was just wanting some input.