Isn't the Powermatic just another re-branded Chinese machine? 10 +- years ago I bought a Grizzly edge sander after looking at them in IWF show. It was obvious they were made by the same manufacturer. The PM was $1000 more! As for quality neither is going to be great but most likely good enough. Look at them to see how they can be adjusted so both beds are parallel. Most heads that are advertised as helical are actually simply stager. See if you can find a used SCM or similar. Much better machines. Top of the line is Martin.