I call BS on you.I'm calling BS on that. There is no way any saw will last the better part of 20 years of full time falling.
The longevity argument for not owning a ported saw is ridiculous. Most people on this site have never wore out a saw in there life. With that said plenty of ported saws in the hands of full time fallers do just fine. When I was logging I noticed no differance in lifespan between ported and non.
I have/had a used 361 that was just ported and tested this spring and never split ever. Ate a set of seals plus the stock ones over the eight years and seven to eight hundred tanks that went through it maybe more. I wore out the piston and needed little else but the usual stuff wearing out like drums, rims other consumables like three worm springs, one worm gear and two drums. Now its ported and on fresh seals, again, with a new piston and rings in it this March. The wrist pin bearing has never worn out or the wrist pin. My rings were at 0.016 gap and 0.011 when they came out with a worn out piston skirt on the intake side from fines. Your BS so move on you long hours hater. It also wore out one carburetor and several air filters and an intake boot. Still got the stock oil pump in it. The case is worn open at the lower front AV mount and it still don't need a jug, case gasket or bearings. Rebuilt the starter once and two Stihl pull ropes plus a few flippy caps. The roller chain catcher saved it nicely with dual medium dogs. It did get a loud ass shotgun muffler this time around and machine work. I hate those shotgun mufflers so.... not my saw anymore so who cares, right? It went to a small weekend worrier company south of me who buys my old saws almost every time I sell mine. This was a bonus for them to have more ported tools from me. Machine work and port work just made it faster, again you hater. It rolls so smooth you shouldn't touch it down bottom. You'd be jealous