I own an old model of the exact same instrument and was very impressed with its capabilities. My problem is that I work on an island that has lawn tractors and small trailers with air tires and I have to kayak back and forth. I ended up leaving my inflator on the island and need one for both of my cars so I bought another one. To my surprise, this is a modernized model, and for me it's even better than the first. The price is right and the operation is easy, so I am very satisfied with both devices.