Hot Rod Magazine just did a great comparison of ratchet wrenches, online, and in the newest issue

http://www.hotrod.com/feature_stories/1310_ratchet_handles_torture_test/ for the results... the last one on the left is a Proto, which started out as the company Plumb. No Snap On, SK, or Blackhawk, just some ordinary swap meet wrenches, except for that Proto