OPINIONS needed/ Impact Wrench choices, help!!

[Z-man]

I bought a small air compresser for filling tires and light tool use.  With a four lb tank to make it easy to carry.  Waste of money.  The tank isn't large enough to remove 80lbs of pressure via the impact wrench and it takes a long time to fill up the tank to fill tires.  I just bought a Dewalt Electric impact wrench but have yet to use it.

Z

[Rick Beggs]

Thw Snap-On 18 volt 1/2 drive impact rules
i have that, and a boost box with a built in air compressor
i use the 18 volt all the time for tire changes, and the boost box for tire filling,
i have a big compressor also, but have not started it in  a year at the track