Upload & Sell: Off
See if you can find the "How noisy is your 7D?" thread on this forum
I'm sure this suggestion is made to be helpful, but I would encourage you to NOT look for any threads with that title. It will be filled with comments from the Canon 7D noise trolls (they inhabit this forum like termites in a rotting building), and you will only end up unnecessarily confused about your potential purchase.
The bottom line is that the Canon 7D is an outstanding camera in its price range, and can produce fantastic images of a variety of subjects. If it fits within your budget, you can't go wrong with it.