Neither of these cameras will make you a better photographer. Taking pictures and learning from what you see and applying that to your future shooting will make you a better photographer. I would say that the rz67 is a much more versatile camera, the fuji is kind of a one trick pony so to speak. Also you can get away with anything you want so long as it matches your aesthetic. If grain worries you than use slower film and a tripod if the shutter speed is slow enough to get motion blur hand held.