My answer is that the camera that we can make 'disappear' from our work flow, where we know it intimately enough that we know what to expect when we use it, is the best one, because it is the least distracting one, allowing you to focus your attention on the important part - the picture!
Tom, on Point Pelee, Canada
Ansel Adams had the Zone System... I'm working on the points system. First I points it here, and then I points it there...