I've used a lot of chainsaws over the years. My information/observations are a bit dated, though, as most of it was accumulated in the 1980s and early 1990s.
Echos were OK for light work, but in general just couldn't handle the stress of the kind of timbering we were doing in the 1980s, which was clearing a LOT of gypsy moth killed trees and turning it into firewood.
McCullochs were decent, but again, had trouble standing up to the kind of use they were getting.
Stihls were, hands down, the best I've used. You could use one all day and it would be looking at you as if to say "That's all? Lazy bastard!"
I only used a couple of Huskys over the years, but they were OK.
Hands down the biggest pains in the ass brand was Poulan. Getting them to start when they were cold was just annoying as hell. More than a few times in the winter we pulled the sparkplug and used a propane torch to heat it. They also tended to flood if you held them up at an angle and tended to flood when trying to start them.
Generally, though, once you got them going they performed decently, but because of the cold start issues they have always been my last choice.
Here's a review of some chainsaws that this site found to be the best.
https://bestreviews.com/best-gas-chainsaws
