I disagree. Some things are good AND cheap. Simple.
But... there is always a more expensive option. For everything.
For the HF DA in particular, I have used it with satisfactory results, but Im not really entering my car into a show, nor do I have the eye to discern the minute differences. I just want a nice level layer of wax to protect my paint. I have also used it to bring aluminum panels to a mirror polish with zero swirls.
YMMV, but its one helluva deal