They are long, heavy, they run forever, and they make well over 600 amps.
With a wire feed module you can run large wires year after year after year.
They are a clydesdale horse at gouging.
The chopper machines give you quite a bit more adjustment with the voltage sensitive wires like 203 Nickle and 232.
They are super reliable and you can rebuild them till the cows come home.
They will run stick rod forever, including the big rods. And very smoothly.
They are a bargain usually because they go pretty cheap for the capability.
JTMcC.