Whats better Manual steering or Power?

I'm getting ready to swap out the power steering in my 66 Valiant for a manual box. Did the same to the 71 Swinger I had when I was 17.
I'm thinking about swapping my Duster back to power (switched to manual a couple years ago when we put the car back together). After the 416 goes in, I don't like the idea of trying to get it back straight with the manual steering if (when) it starts to go squirrelly.