Currently I have an Echo Pb-413. Its been a great blower for the past 2 1/2 years for blowing grass clippings. But when I do leaf cleanups I feel I've been very underpowerd. I will need a more powerful backpack this fall as I've gotton many more new clients that would like my cleanup service in the fall. So I'm wondering what would be a good more powerful backpack. My options in town are Stihl,Echo,Husqvarna,Shindaiwa or Kawasaki( RedMax 30 miles away). Which would you guys choose?