<p>The 503CW is a clear favorite. One of the best cameras ever made, if not the best.<br>
The 501CM is also a good choice, however it cannot take the electronic winder and that is a major problem as the winder is a very useful addition to the camera: it allows you to keep focusing on the subject when you shoot and also provides a very good grip on the camera. In addition, the 501CM does not have the automatic flash control which is a must have for some photographers.<br>
Stay away from the 200 series (2000's, 202's, 203's,205's . . .) . Nobody can maintain them anymore and they have many other problems.</p>