dont suffer from analysis paralysis..People are different. Some could gaze upon Mt Everest and it would never occur to them to climb it.
Sometimes the point is knowledge, not just fusion.
Jack
some days you just have to get on with the job in hand , when its done its done. I have never worried about what amps are floating about , if its welding nice , Im happy .
Now a dozen racks full of Lab Gruppens are the kind of amps I did like looking at , but thats a different subject.