Bought this to carry in my RV motorhome. RV tires are high pressure, 80 psi and it is critical to keep them inflated properly. I do not want to be driving around looking for a service station with an air hose, only to find it is not working. This unit inflates my RV tires quickly with ease. It is 18 lbs. lighter than the pancake models making it much easier to carry and less weight in the RV. It comes with all the accessories I need, hose and chucks. I didn't need to purchase anything additional except a good quality tire gauge.
Positives are it's light and takes up little space and charges its small tank in roughly 30 seconds. The negatives are that it's reasonably loud and holds so little air that it basically needs to constantly run to keep up with demand. I wanted to use it portably for car tires but it completely emptied the tank taking 1 tire from 24psi to 34psi. I wouldn't even think of running air tools with it unless you want to hear it run all the time.
I bought this as a gift and the person that received it thought it was great.