As of August 2015, some of the best-rated string trimmers are the Echo SRM-225i, the Husqvarna 224L and the Worx 32-volt cordless trimmer. All have achieved or are close to top scores in five-star online rating systems.
At the Popular Mechanics website, the Echo trimmer receives praise for both smooth functioning and extreme power. The model had better results than any other trimmer in a side-by-side comparison test cutting thick grass and weeds. Customer reviews at Amazon.com state that the Husqvarna is easy to start, well-balanced and not too heavy. Home Depot user reviews appreciate that the Worx trimmer handles well, does not have a cord and creates very little vibration.