I usually buy pink Neiko and blue Astro even if they work well they are short lived they are not nearly as balanced. They are of higher quality than all other Che apps here, so if you just want a good cheap app, get it. I usually buy. I use them every day and have bought 7 Neiko and 4 Astro. It is more than 9 years old with the age of daily use. Usually they fail, because the whole body begins to sound separately, and even if it can be restored temporarily, this is the beginning of the end. This one is better constructed, turns more precisely and lasts longer. Is it 4-5 times cheaper? Not sure if it's worth double or triple. I've had it for a year now and it still works great. I usually use the Astro for the dirtier work on the machines, but this is the best option. ****To a reviewer who left a one star rating solely due to the fact that they didn't read the description that this is a pneumatic tool and not an electric one. Thank you for dropping the average rating of a good tool for a bad reason! I mean why! You even admitted you didn't read it properly and that was your shaky reason for returning it, so why leave a 1 star review!?