Late to this party....
My choices:
Trees under 36 dbh
Husky 335, dual port muffler, one mean 200t vanquisher..
woods modded 346XP, or Dolmar 5100S. They'll outcut a stokc 440 in under 20 inch wood.
Modded Dolmar 7900, pulls 36 bar with ease in softwood.
Bigger trees:
335, ported 372, 066
Biggest trees, with big branches:
346
372/7900
3120, modded, and putting out 13.2316784500 hp......