I never use an impact wrench on my car except for a couple of places where it just makes sense (i.e. shock tower bolts). When I do pull out my impact, it's typically to break something loose, so my Ingersol Rand (with over 600 ft/ lbs) really comes in handy. I'm a weekend warrior, but I had a couple of pro wrenches tell me not to waste $ on lesser wrenches, and go with the I/R so that's what I did. That being said, my I/R wouldn't budge my engine mount bolts the first time I removed them (but it did have enough torque to snap my crossmember
) whereas a 3' breaker bar (section of pipe) worked like a champ. Honestly, if it were me, I'd stick with sections of pipe rather than get a wrench that won't do the tough jobs. I've loaned my I/R to a buddy when his wasn't getting the job done, and he was looking to buy an I/R the next day.