● String Trimmers · Comparison

EGO Power+ ST1521S 15-Inch String vs Worx WG183 40V String Trimmer

Both made our Best String Trimmers for Edging shortlist, at #1 and #2. Here's how they differ and who each one suits.

✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 4 min read

As an Amazon Associate I earn from qualifying purchases. Picks are based on manufacturer specs, independent reviews and owner reports.

EGO Power+ ST1521S 15-Inch String TrimmerEGO Power+ ST1521S 15-Inch String TrimmerView on Amazon VS
Worx WG183 40V String TrimmerWorx WG183 40V String TrimmerView on Amazon

Quick verdict

Choose the EGO Power+ ST1521S 15-Inch String Trimmer if you want pivoting head locks cleanly into edging position without extra tools. Choose the Worx WG183 40V String Trimmer if you'd rather have under 5 pounds makes it easy to hold at the edging angle for long stretches. Overall we rank the EGO Power+ ST1521S 15-Inch String Trimmer higher: #1 versus #2 in our Best String Trimmers for Edging list.

Winner overall: EGO Power+ ST1521S 15-Inch String Trimmer

EGO Power+ ST1521S 15-Inch String Trimmer vs Worx WG183 40V String Trimmer compared

Every difference that matters, in one table.

Keep researching

  • Best String Trimmers for Edging
  • EGO Power+ ST1521S 15-Inch String Trimmer review
  • Worx WG183 40V String Trimmer review
  • All string trimmers

Bottom line

Choose the EGO Power+ ST1521S 15-Inch String Trimmer if you want pivoting head locks cleanly into edging position without extra tools. Choose the Worx WG183 40V String Trimmer if you'd rather have under 5 pounds makes it easy to hold at the edging angle for long stretches. Overall we rank the EGO Power+ ST1521S 15-Inch String Trimmer higher: #1 versus #2 in our Best String Trimmers for Edging list.

EGO Power+ ST1521S 15-Inch String Trimmer

EGO Power+ ST1521S 15-Inch String Trimmer

EGO

Carbon fiber shaft keeps weight low without sacrificing reach on an incline

  • 15-inch cutting swath
  • Carbon fiber split shaft, adjustable length
  • 56V ARC Lithium battery, 2.5Ah included
  • Brushless motor
  • Under 8 pounds

Pros

  • Under 5 pounds makes it easy to hold at the edging angle for long stretches
  • Two included batteries mean a full lot can be edged and trimmed on one charge cycle
  • Dual-exit head keeps line closer to hardscape without scalping the lawn

Cons

  • 13-inch swath means more passes on a wide driveway
  • 2.0Ah batteries run down faster on dense edging line-to-concrete contact
  • Pivot angle has fewer fixed detents than the EGO's mechanism
Prices and availability change, so confirm on Amazon.View on Amazon
Worx WG183 40V String Trimmer

Worx WG183 40V String Trimmer

Worx

Lightest trimmer in this list, easiest to hold steady on a steep, short section

  • 13-inch dual-exit cutting head
  • 40V PowerShare, 2 x 2.0Ah batteries included
  • Under 5 pounds
  • Pivoting head

Pros

  • Lightest trimmer in this list, easiest to hold steady on a steep, short section
  • Two batteries mean you're not stuck mid-slope with a dead pack
  • Low weight reduces arm fatigue holding the tool at an uphill angle

Cons

  • 13-inch swath means more back-and-forth passes on a wide slope
  • Fixed shaft length, less reach flexibility than the EGO's adjustable design
  • Less motor torque for thick growth that often collects on untended slopes
Prices and availability change, so confirm on Amazon.View on Amazon

FAQ

Common questions

Which is better, the EGO Power+ ST1521S 15-Inch String Trimmer or the Worx WG183 40V String Trimmer?

Choose the EGO Power+ ST1521S 15-Inch String Trimmer if you want pivoting head locks cleanly into edging position without extra tools. Choose the Worx WG183 40V String Trimmer if you'd rather have under 5 pounds makes it easy to hold at the edging angle for long stretches. Overall we rank the EGO Power+ ST1521S 15-Inch String Trimmer higher: #1 versus #2 in our Best String Trimmers for Edging list.

What is the difference between the EGO Power+ ST1521S 15-Inch String Trimmer and the Worx WG183 40V String Trimmer?

The EGO Power+ ST1521S 15-Inch String Trimmer stands out because pivoting head locks cleanly into edging position without extra tools, while the Worx WG183 40V String Trimmer stands out because under 5 pounds makes it easy to hold at the edging angle for long stretches. The trade-offs differ too: the EGO Power+ ST1521S 15-Inch String Trimmer's ma in caveat is that 56V battery and charger add cost versus 40V competitors, and the Worx WG183 40V String Trimmer's is that 13-inch swath means more passes on a wide driveway.

Is the EGO Power+ ST1521S 15-Inch String Trimmer worth it over the Worx WG183 40V String Trimmer?

For most buyers, yes: it's our #1 pick. Consider the Worx WG183 40V String Trimmer instead if 56V battery and charger add cost versus 40V competitors is a deal-breaker for you.

Who should buy the Worx WG183 40V String Trimmer instead of the EGO Power+ ST1521S 15-Inch String Trimmer?

The Worx WG183 40V String Trimmer suits edging, while the EGO Power+ ST1521S 15-Inch String Trimmer is best for edging.

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