Seconded. We round file for that very reason -- most of what we cut is hardwood (can you say Osage Orange?). It's a rare day to cut down a pine, so last week's 80' standing dead pitch pine was a rare treat. And our round file chains did just dandy on it, too — topped, dropped, and choppedI accept that square filing may be faster in your soft woods out west but in these parts we have more hardwoods than softwood. And in hardwood round filed is faster IMO.