The only times I use a single sided trimmer are for larger limbed material like privet hedges. I have used the Little Wonder, as they are powerfull little cutters. Don't like the electric thing, however the double sided cutters are the only way to go for us. We have flexibility to cut on the way up..!! You aren't restricted to only cutting right to left-top to bottom...! Had an employee...........lose 3 of his finger tips on the little wonder.!! They cut anything!! My unit was 18 years old and the motor went out..........it well payed for itself long ago,.