My Hobart Handler 140, Husky 60 Gallon compressor, and my I/R 2135 1/2" impact...
I use them all more than I thought I would when I bought them.
The IR kicks ***. I removed some of the nastiest rusty nuts you can imagine with it... no rust penetrant was applied to the threads either... it spun them off after hammering on them for a couple of seconds. 1100 ft-lbs of torque... can't ask for much more than that... plus it was 286 bucks from amazon... good price.
I thought about an Aircat Kevlar 1000 gun for near the same price, but shied away because I never see the name around... whereas I can remember seeing IR trailer compressors at construction sites when I was a little kid.
I even read that many reviewers of this impact actually are in the heavy truck/diesel industry... they use these IR's rather than the big 3/4" impacts to remove lug nuts on semi trucks... enough said.

Sole reason I bought mine, lol. I knew I'd need the power every now and then.
The Hobart has seen quite a bit of welding... I love the thing. Gonna be welding up a winch bumper for my Ranger once I get some steel plate cut out on the CNC plasma at college... Yep, we're talking 1/8" or 3/16" plate... then I'll slap a HF 12,000 pound winch on it... and some KC Hilights Daylighters... and make a bracket for a CB antenna.
The big freaking Husky is awesome... still got a few more mods in mind for it though, such as the franzinator and an 14" automotive air cleaner adapted to fit properly above the cylinder head on the compressor... and maybe some auxiliary fans/blowers to help keep the thing cool so it doesn't make so much water...
Every tool I've got has seen its fair share of work. A good tool (whether bought that way, or made that way) is priceless. Doesn't matter if it came from HF, Sears, or Snap-On.