18V impact driver used as impact wrench

The only thing we get the big one out for is control arm bolts, big trackbar bolts, pinion nuts, and occasionally stub shaft nuts.

Mine loosened my control arm bolts and tracks bar bolts like they were nothing. I was impressed.
 
No matter what brand you get, try to stick with brushless motor versions like the Fuel stuff Milwaukee has. Milwaukee has both in a lot of tools, brushed and brushless. The brush stuff is just about not worth owning.

X2