Ok , now I'm curious , why did you spend the extra money ?
Part of the reason I spent the extra money is because of my backgound in the boat business. The old boat rule is that if two products look similar but the price is significantly different, the higher priced item is usually the one made from better materials (better grades of stainless), and will result in NOT having to buy the cheap one several times.
When I was shopping for collet chucks (before I knew that the collets were er32), Beall had all the 1/16 sizes available that I thought I would use (and sometimes) actually DO use. I picked up the phone and called Beall and got a pleasant and informed human on the phone. They told me the tommy bars were included, but usually not really necessary. Very nice people on the phone.
Given my experience with PSI (not good - in fact, I only buy the things that I can't get somewhere else, and with the "PSI Resellers" that IMHO put PSI to shame, I now buy ONLY two products from PSI, India made cheap pouches, and Chinese made display boxes with glass windows) I chose to deal with the company that actually WANTS my business!
FWIW, my neighbor, the NEAT FREAK, owns the PSI collet chuck and actually perfers the BEALL. He says the threads are much smoother and
and the fit is "exact" (his words) straight across with no indents and no knurling to clean with the tooth brush.
Having used BOTH chucks and knowing that the beall money is going to American penturner that saw a need and filled it to the best of his ability, TODAY, I WOULD MAKE THE SAME DECISION.
You get what you pay for----IF YOU ARE LCUKY.