My old Echo expired this week and I replaced it with a new Stihl FS 131. I switched brands because I got tired of messing with the carb on the ECHO. I replaced it several times over the years but it has always needed attention. I even broke down and had a small engine shop tune it up once and they did no better than I've done. So it's time to move on. I have no idea yet if I made a good move with the Stihl but with all the spring growth here I'm going to find out. I hope it does because this new weed whacker was more expensive than a box store Echo.