I'm in the market for a new camera. I currently have the Canon 350d. I was looking at the canon 50d and 7d. I have read good reviews on both. I don't need the video capability on the 7d and thought it wise to pay less for the 50d and buy a good lens i.e I'm looking at the 24-70mm canon lens to use almost always on the camera body. I have particular interest in portrait shots namely my 3 daughters. Any advice would be greatly appreciated. Someone said the 24-70mm is not appropriate for the 50d and the 17-55mm f2.8 would be a better buy?