I am very dissapointed with this machine. The variable speed facility is a nuisance, seems to slow down randomly, would be far easier to control if running at full speed all of the time. The balance of the machine is atrocious, when using it I constantly seem to be leaning forward , this is part due to bad posn of the "adjustable" had grip. After completing the garden I end up with a sore back. I can't believe that someone designed a piece of kit which is as bad as this, I am amazed actually. I will almost certainly have to get rid of it. The back and decker trimmers of yesteryear were well balanced and easy to use. AVOID...... do not buy, as far as I can gather all Flymo trimmers are badly balanced.