Got to agree that there is no reason to switch systems. Although I prefer the look of Canon files, that's just an opinion and it's personal with no relevance to anyone else. Nikon makes excellent cameras and any of the newest ones will be magnificent. If you want to spend some money on gear, get a camera that matches up with your lenses. This Nikon vs Canon thing is just foolish. If you're not getting good pictures with the camera brand you have, the problem is not the camera.