Bill,
I know they cost more than most and maybe they are a better design.
I had a Canton pan on my old engine and the pan cracked right across the bottom. I did not hit anything, a crack just appeared along with the
oil on my garage floor. We rewelded the pan and reinforced it and it didn't crack again until I put a rod thru it.
Aviad pans have a good reputation but I don't know if they work better.
RD