Only used once so far to charge my light truck tires. The accuracy of the analog gauge is approximately 1.5 psi. Seems to be sufficiently built for several years of operation (that remains to be seen, of course). It is a bit quieter than its predecessor, but also lighter. The only thing I don't like is the back. Fairly thin plastic and no 'exhaust hole' for an (inflatable) air line so the lid has to stay open during use. Not a big deal, but I'll probably see if I can just remove it before it breaks, or maybe I can cut out an air line outlet.