I was wondering about the larger echo's, I haven't heard of anyone running them. I love my 355T, and I limb with a 450P, and will probably be adding a larger felling saw this year as I'm getting tired of cutting in from both sides with my 450 to drop a tree. (I'm not skilled enough yet to make that type of cut accurately and efficiently). I was considering the echo as its sooo much cheaper than stihl and husky