When ever I got mulch jobs, I've alawys edged the beds by hand. Well I got a decent size job, 30 yards and another about 20 yards, so I decided to rent a power edger from home depot. It was a e-z trencher, that thing was fantastic. It cut a perfect edge and was very fast, I'd say you could edge about 40 ft. per minute. So if you ever get a few edging jobs, line them up and rent one of these if you don't own one. You will save alot of time and money. It cost me $70 for a day.