21V 3-in-1 Cordless String Trimmer vs WORX WG170 GT Revolution

The WORX WG170 is the safer pick for most yards. It has a 12-inch cutting width, a 7,600 rpm motor, 7 handle and 6 head positions, a 3-year warranty, and 1,693 ratings averaging 4.5. The 21V 3-in-1 is a generic no-name tool with only 17 ratings, but it ships with two batteries, a brushless motor, and both a metal blade and a saw blade, which the WORX lacks. Build quality and support favor WORX; attachments and included batteries favor the 21V.

• Choose the 21V 3-in-1 if you want two batteries in the box, a brushless motor, and a metal blade plus saw blade for thicker weeds and brush.
• Choose the WORX WG170 if you want a proven trimmer with a 3-year warranty, a wide 12-inch cut, and easy tool-free switching between trim, edge, and mini-mow.