I've been using a FS130 for years. I love them! I string edge and do a lot of heavy trimming along with a ton of residential stuff. I love the power, because a FS90 just doesn't have enough oomph for me. Anyways. This year I have so much work I can barely handle it. I've found myself and my crews working much longer days than we were used to. The FS130 has never bothered me before, but with these long days it's killing my shoulders. My wife was trying to work the knots out and she said my shoulder is all swollen and she tried icing it down. I'm thinking of picking up a FS100RX for power and lightweight. I just don't want to spend the money if it's not gonna fix the problem. What do you guys think? Will I be satisfied with the power? And is it light enough to help make a difference with my shoulder swelling?