So far I am very happy with this compressor. The only thing that worries me is the temperature sensor which I replaced. The standard sensor is powered by 2 watch batteries which can only be accessed by opening it, voiding the warranty. Anyway, mine were almost dead on arrival. I replaced the sensor with the one in the photo, it works perfectly. As mentioned in other reviews, do not use without the water/air separator. This device spits out quite a bit of water and you don't want that in your PCP. In general I am very satisfied, it works perfectly. Don't expect this to fill up your tank very quickly. I use it on my Hatsan Airmax and it fills it from 0 to 200 bar in just over 10 minutes. IMO not bad compared to an hour of pumping with a hand pump.