Hello DJ,
I just thought I'd reply so you didn't think you were being ignored. I'm pretty amateur myself...
As far as I have learnt, the argo tells you where things are, but doesn't drive your scope, you have to move it yourself. On the other hand, the goto will give you some tracking for long exposure photography (to get better colours and detail).
However if you are tracking on an alt-az mount, there is some rotation that may spoil longer exposures.
I'm sure someone with a little (lot
) more experience will reply to you post more comprehensively soon.