For what its worth, in my corner of the world, the Husqvarna 365 in all its versions has been the industry standard for over 20 years. I'm not strictly talking about loggers, who dont actually use chainsaws for felling very much any more up here... we are talking about oil companies, mills, pipeline/ power line maintenance, surveyors, seismic crews, slashers, private and government forestry service... you name it. Basically, if your running a company saw up here, chances are its some sort of 365.
It probably wouldnt be the faller's weapon of choice, but since we're talking longevity, a slightly detuned jug on a '72 bottom end has one hell of a track record. Just my observations.