Power tools

Agree with Mopar Momzee, it depends on the job. I like pneumatic tools for RPM control when sanding or grinding, but I also love my DeWalt impact driver when I have a lot of nuts/bolts to break, or screws to drive.

Honestly, I do 80% of fastener work by hand with either a wrench or ratchet because I like to be able to feel the threads, or if there's resistance so I can stop before damage is caused. Then again, I'm not a professional so time/efficiency isn't as much a factor.