said by cdru :

I really like my Ryobi string trimer. It's a dual spool, straight shaft, 2 cycle trimmer. Never have had any problems with in in over 5 years with very minimal maintenance ever required. Winding the dual spools also is pretty easy. There are little notches that help hold the line while your are inserting it, and the process of inserting and twisting it into place pops the lines right where they need to be.