I have always had good luck with poulan. They last about 10 years, then the carb goes. I usually have about 4 chains worn out by then and on the last one the roller nose on the bar would lock up, I sell them for $20 to a shop, he knows they need a carb, sprocket and new chain but I use quality oil and the power head is good. I can have a new saw with 2 new chains for little more than the repair would have cost..