I live off the beaten path so I have to either fly the 240 miles into a city that has MAc & Snap-On or I can order on-line, I have a mix of tools, Dimaond, S&K, Snap-On, Thorson, Proto/Challanger, MAC, Armstrong, Cornwall, Gearwrench and Metwrench, and the sears wanna be gimick stuff, I still have a very old and stout 1/2" wrachet that is marked Montgomary Ward, I have MasterMechanic hand wrenches around as well I bought from a ACE hardware store, it gets to be a hassle when quibbling about replaceing them, If I got the $20-30 use outta the tool I'm happy, shrugg it off and solder on with a replacement.
I use Fluke for trouble shooting, Pacific Tool torque Wrench that beats MAC and is better suited than Snap-On and the last 3/8" drive S&K torque wrench I bought I wasent happy with and traded off soon
I did part 135 aircraft maintenance for 14 years.
if your useing tools to earn a living get the best you can afford and like anything man made it should have replacement parts available. Ive seen High end tools break, you just hope you made your money back out them before they fail or wear out.