When selecting a shop, yes the installation tools are important, but not as important as the compressed air source. This is frequently ignored by both customer and shop owner. Ever notice where the air intake is for most shop compressor? Near the bathroom. That's right, your tires are being filled with high humidity and human waste riddled air. Pop a tire and suddenly you have a wicked case of pink eye, how's that BEST shop working for you now? What's that you ask, air freshener in the bathroom cures all? Not a chance, the NcO2 found in most air fresheners will rot your tires out from the inside out. Got a creek running along the back of the shop? Hah, enjoy health related issues from all the bacteria being injected into your tires, might as well take a bath in the sewer. Do your homework people.