Craftsman 3/8 in. Pistol Grip Impact Wrench —
I purchased this impact wrench around 2007 for ~ $70. I a home DIY mechanic that occasionally works on other peoples vehicles. I love this gun because it is light and small and has fantastic power control. Power is decent even below 90 psi. If you want more power the air pressure needs to be cranked up to 135 psi +.
My main complaint is power control when tightening. On the lowest setting it doesn't spin. Reverse works good on all settings. Also, I striped a bolt when tightening because I forgot to check the power and it was on full. It would be better to have a power dial and a second dial for direction. That way you leave it on low and just change direction.
I think the complaints regarding power or control are not justified at this price range. Sure if you spend 3-5x the price of this tool you will get something that is much better. How much power is needed with 3/8" sockets on bolts that are typically 15mm or less. When I work on a car or motorcycle the majority of the bolts are less than 25 ft lbs. When I have to work on lug nuts I use 1/2".