Stihl, Husquvarna, Jonsered, Echo, Shiwndaiwa all make excellent saws.
There are home owner, semi-pro and pro models available and saw performance is usually related to maintenance and care.
Select a brand of saw with an excellent dealer nearby, select the model sized for your needs.
I have a Stihl MS260 I recently bought. I spent better than a month researching what saw to buy. Ended up spending about 3 hours at a saw shop with some Husky's and Stihl's dissassembled.
I liked the feel of the stihls, the translucent fuel tank, the quick open caps, the one lever choke, and the inboard clutch that makes swapping bars and chains a cinch.
Try them out, see how they feel. The husqy's don't seem to clog air filters as quick as the stihls, but you have to buy an expensive one to get an aluminum crankcase.