I have used the stihls, echos, deere, redmax and shindawas. In my many years of experience, the shindawas outlast, out perform all others. They may weigh more than the others, but what little it costs to keep them going, they pay for themselves. Right now we have redmax, and I have an ongoing issue with them. They run great, have great power and use less gas, but after a while, we have issues with their carbs. The only reason we have used them thus far is because of a fleet discount we recieve. Personally, I will start replacing them with the Shins starting next year.