This compressor will never rest. U should have a max pressure of 120psi or higher. 2 cfm or higher at 40psi. I paid $250 for a California air ultra quiet 6 gal 1hp compressor and have been using all day every day for over 6 months without any problems. It doesn't have to be dental grade as long as u use proper filters and dryer. I prob have $400 into my setup. I use intuitions daily. They are great machines and intuition is a great company. Air is the way to go. Perfect amount of give.