[anijet]

My experience from 40 years in aviation maintenance.

Dial indicator wrenches are the most expensive and most accurate but somewhat difficult to use in high torque applications (hard to see the dial when applying 140# of torque). These must be calibrated regularly.

Snap-over (click type) are the easiest to use, least accurate, go out of calibration easily and must be checked regularly. They must always be turned down to zero when not in use. I use Snap-on and Proto but calibrate each 3 months.

Simple bending beam wrench is the least expensive and although calibration is recommended they almost never go out of calibration unless grossly mis-used. This is what I carry in the truck. Sometimes KIS(Silly) is still the best.