I am looking at Stihl and Echo trimmers. Which one should I get? Also, edgers. Should I got with a stick edger or just a normal edger? Sorry if I am incorrect the type of edgers I just mentioned. I saw a LCO using a trimmer to edge, but he has a disc like thing on the end. I don't know if it was just a cover or an actual type of trimming tool. Anybody know what that might have been. The edge around the sides walks he did, looked awesome.