Okay I am 6'4" and am having trouble as I get older (52) using the shorter string trimmers. I have checked out the Tanaka extended reach trimmer at $375.00 from Wisesales and have found it is the only one out there so far. Are there any others I should check on. Redmax used to have one but cannot find it anymore. BTW it needs to be commercial grade!! We currently use Tanaka 260pf and Redmax BCZ2650T trimmers.