We only use Stihl products at Scranton Tree Service. Prior to working there, I did experiment with different types and had used echos in the past but I've always gotten the best results with Stihl. It just feels better in my hands.Right off the bat let me say that I am currently running all Stihl saws. And I have no complaints with them. However I was wondering if someone has objective information on the quality differences between Stihl and Echo. I don't want to hear that Echo is junk because you don't like them, or because you had one once that didn't run right on three year old gas! I'm more interested in quality of materials used in construction, ability to hold up in a professional use environment. And in a comparison of the general build quality, longevity, and performance of the engine. As well as the overall fit and finish of the saw.