I've got 3 years clear cutting, firewoodin, and beetle-killed spruce thinning on a 620pw. December of 2021, I paid $592 shipped to Alaska with a 28" bar, 2 chains + shipping.
I've run from 30 below zero to 80 degrees. Saw has bounced around in tote sleds, river boats, dog sleds and the work truck.
Saw has been run on Red Armor, stihl hp ultra, lucas and saber. 50:1, 40:1, 32:1.
I've run 20", 24" and 28" bars and oils all just fine.
No hot start issues, or crank bearing issues. Echo replaced a broken chain break 2 years in. Sent if free of charge. Over 3 years later, still has 160lbs of compression.
This model has been plodding along for years. It'd be foolish not to mention it, in any context of a "60 cc thread".