There's really nothing different than the pro saws about them. Different stater mechanism, maybe different porting? But they're every bit "Pro" style construction. Most similar to the Pioneer P41. Shares almost all parts in common except for flywheel/starter. I know that Farmsaws were even used in the logging industry as company-provided saws. 65-ish CC's. Some (although a bit of a stretch) even came from the factory with a 28" bar. Things that go wrong on them: Reed cage can crack, causing air leaks; Blue ignition coil can go bad, but can often be fixed by baking the coil; the top covers break; but most notably, the starter pawl gets rounded out. Very cool starter design, which engages decomp valve when starting. But also a pain in the butt to find parts for. I have an extra starter pawl sitting around.