I know this is a tough one, to be replied on by the seasoned vetrans. I have always used Shindaiwa T 270's or T 350's. I just bought a Kawasaki KBL 34 and I am not impressed with power. Who really trully makes a trimmer that can swing 12"s of line with no fuss. My T 270 do it but ***** a little, I am looking for 20 % more power than a T 270 and I will be in heaven. The kawie is 33cc and less powerful than my 27cc T 270? WHAT GIVES! I also have a ECHO SMR 260, what a load.