I have an approximately 7 year old gently used Little Wonder professional edge trimmer Model 6032. I recently purchased a Stihl hand held stick trimmer with multiple attachments and no longer need my Little Wonder for my edging needs.
It has a powerful 3.5 HP Briggs and Stratton engine and double sided reversible blade for extended life. This powerful machine makes quick work on any sidewalk. Easily maneuvers around contoured and curved sidewalks. Depth of cut can be adjusting while machine is running without having to interrupt edging. The machine does all the work, all you need to do is guide it.
It is a little hard starting, but quickly remedied by using gas with an octane rating of 89 or better and someone who is handy.