Owned an ECHO SRM-280 not the T model prior to this new trimmer. Just bought the new one expecting the same quality. The old one is only about 3 years old BTW, but has lots of time on it. The New trimmer seems to be about the same, but the new PRO bump heads blow the big one compared to the older pro bump heads. The way that the string winds into it both strands take up the same chamber, and they have a tendancy to twist up, and get caught on each other. Then they don't feed. Also the head itself will not hold near as much string. For an almost $400 dollar trimmer I find that to be unacceptable. Called echo and told them That I think that it sucks that they would take what was a very well balanced nice piece of equipment and put a piece of crap barely home owner quality head on it so I can spend my time with my trimmer upside down untangling wire all day instead of trimming like I am suppossed to. Please send me an old head from your older model trimmers. The lady was very nice and is sending me an old head to replace it with. Anyone else had similar experiences.