quality of this gauge appears very good. Far better than the $29 offerings from another brand I used to loyally use. Smooth action. Consistent backlighting. Nice mount bracket. Note... the backlight is a fixed brightness and does not vary with the oem dash dimmer. I'm using it with onboard air for rear air springs that run from 5-20 psi. a little creative plumbing was required to reduce the needle from bouncing up and down with suspension motion. based on the cost, I do have to think twice to make sure I'm sure I need a gauge to be added, but if it's worth it, I think this brand is probably the way to go.