My echo 2100SB that I started out with 6 years ago is about to go into the trash. For the past few years it has been only hooked up to the hedge trimmer attachment. Recently when trimming some compacta hollies it left a lot of jagged cuts and it has been falling apart for some time anyways. So I need some new hedge trimmers and I need another weedeater anyways so what should I get? How easy is it to interchange on the Stihl and Redmax? Anyone have experience with the hedge trimmers on the Stihl or Redmax? Are they better than my Echo? Which I never thought gave a really clean cut. Opinions appreciated.