I run a Stihl 036 (20") mostly with 72LGX072G 3/8' .050 72DL Oregon chain. BEST CHAIN I HAVE EVERY RUN!
Husky 55 (16")
and a Stihl 200T (12")
Have others that a bigger, but those are my main tools... we are taking hundreds of trees and making lumber/selling firewood (+/- 50k BF of lumber and 300 cord of firewood from tops and slash).
Very few trees that a 20" bar cannot handle.
https://www.24hourcampfire.com/ubbt...m-poplar-hickory-free-firew#Post14139611