Rankings

The DEWALT FLEXVOLT 60V MAX is a heavy-duty cordless string trimmer designed for professional use and dense overgrowth. Its gear drive transmission and brushless motor provide exceptional power, though the weight and high power output may be unnecessary for light residential tasks. It is best suited for landscapers or homeowners with large properties requiring robust performance.

The BLACK+DECKER LST522 is a versatile 20V MAX cordless string trimmer and edger featuring a 12-inch cutting swath and automatic line feed. Its PowerDrive transmission and convertible design make it ideal for routine yard maintenance and edging. However, it may struggle with very dense overgrowth and battery life is limited on high speeds.

The BLACK+DECKER GH900 is a lightweight, corded electric 2-in-1 string trimmer and edger featuring a powerful 6.5 Amp motor and a 14-inch cutting path. It is designed for residential use on yards up to 1/2 acre, offering high-torque performance for tough weeds and an automatic feed spool system for continuous line feeding. The main trade-off is the restriction of the power cord, which limits mobility compared to cordless models.

The BLACK+DECKER BESTE620 is a corded electric 2-in-1 string trimmer and edger featuring a 14-inch cutting path and Automatic Feed Spool technology. Its unlimited runtime and powerful 6.5 Amp motor make it ideal for homeowners near power outlets. However, the cord restricts mobility and requires careful management to avoid disconnection.
The BLACK+DECKER BEST935 is a lightweight, corded electric string trimmer featuring a 4 Amp motor and a 13-inch cutting swath, designed for household yard maintenance. It offers unlimited runtime via a power cord and includes automatic line feeding for simplified operation. The tool also converts to an edger mode for precise trimming along sidewalks and driveways.
| Attribute | ![]() | ![]() | ![]() | ![]() | BLACK+DECKER BEST935 13-inch |
|---|---|---|---|---|---|
| ↓ lower better | 7.9 lb | 5.5 lbbest | 6.5 lb | 12 lb | 6.2 lb |
12 in | 14 in | 14 in | 15 inbest | 13 in | |
20 V | 120 Vbest | 120 Vbest | 60 V | 20 V | |
— | — | — | 6,600 RPMbest | — | |
2.5 Ah | — | — | 3 Ahbest | — | |
2 years | 2 years | 2 years | 3 yearsbest | 2 years | |
— | — | — | 0.42 hoursbest | — | |
— | 100 ftbest | — | — | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() | ![]() | ![]() | BLACK+DECKER BEST935 13-inch |
|---|---|---|---|---|---|
Support & Warranty(1) | |||||
Warranty Length (years) | 2 years | 2 years | 2 years | 3 years | 2 years |
Power & Energy(5) | |||||
Power Source | Cordless | Corded Electric | Corded | Cordless | Corded Electric |
Voltage (V) | 20 V | 120 V | 120 V | 60 V | 20 V |
Motor Type | Unknown | 6.5 Amp | 6.5 Amp | Brushless | 4 Amp |
Battery Capacity (Ah) | 2.5 Ah | — | N/A Ah | 3.0 Ah | — |
Runtime (hours) | Unknown hours | Unlimited hours | Unlimited hours | 0.42 hours | Unlimited hours |
Design & Ergonomics(4) | |||||
Weight (lb) | 7.9 lb | 5.5 lb | 6.5 lb | 12.0 lb | 6.2 lb |
Shaft Type | Unknown | Straight | Straight | Straight | Straight |
Handle Type | Adjustable | Adjustable Height, Pivoting | Adjustable | Auxiliary | Built-in Auxiliary Handle |
Shaft Material | Unknown | Not specified | Unknown | Unknown | — |
Features & Accessories(2) | |||||
Edger Conversion | true | true | true | false | true |
Included Accessories | Battery, Charger | Trimmer, Spool, Handle, Guard | Spool, Handle, Guard | Battery, Handle, Spool | — |
Performance & Cutting(5) | |||||
Cutting Width (in) | 12 in | 14 in | 14 in | 15 in | 13 in |
No-Load Speed (RPM) | Unknown RPM | — | Unknown RPM | 6600 RPM | — |
Line Feed Type | Automatic Feed | Automatic | Automatic Feed | Bump Feed | Automatic |
Transmission Type | PowerDrive | PowerDrive | PowerDrive | Gear Drive | — |
Line Diameter (in) | Unknown in | 0.065 in | Unknown in | 0.080 in | 0.065 in |




Products in the top-left offer the best value (high score, low price).

Official BLACK+DECKER descriptions and retailer specifications position the LST522 as an efficient tool for overgrowth management, emphasizing its ample power, 2-speed versatility, and comfort features.
Everyday users commonly praise the ease of use, particularly the no-bump automatic feed and quick edger conversion, noting solid battery life for small yards. Recurring complaints focus on battery drain on high speeds and occasional line jamming.

Professional reviewers and editors highlight the BLACK+DECKER GH900 for its powerful 6.5 Amp motor and high-torque PowerDrive Transmission, which effectively handles tough weeds on properties up to 1/2 acre. They praise the ergonomic design, automatic feed spool system, and Smart Edge mode for providing comfort and clean results.
Everyday users generally praise the tool's power for handling weeds and grass, as well as the convenience of the automatic line feeding system that eliminates bumping. The ease of converting between trimmer and edger modes and the comfortable design for small yards are frequently highlighted.

Search results lack dedicated expert reviews or editorials for the BESTA510. Official product pages emphasize its power, ease of use, and AFS technology as ideal for homeowners tackling yard overgrowth.
Direct user feedback for the BESTA510 is limited, with no aggregated ratings on major retailers like Walmart. However, reviews for the comparable GH900 model describe it as great for homeowners looking for a powerful trimmer, with specific praise for the motor and line feed efficiency.

Professional reviewers praise the DEWALT FLEXVOLT 60V MAX lineup for its brushless motor delivering up to 5800 RPM and its effective 15-17 inch cutting swath. They note that it powers through dense growth similarly to gas models while offering cordless convenience.
Everyday users commonly praise the trimmer's strong cutting power through thick weeds and the convenience of the quick-load spool system. However, recurring complaints focus on the 14.8 lb weight feeling heavy for extended use and shorter runtime on high speeds.
Search results lack specific expert reviews or editor quotes from major retailers or independent testers. Product pages from BLACK+DECKER and retailers highlight reliable performance for quick trimming and edging, positioning the tool as a budget-friendly household option with lightweight comfort.
No detailed user reviews or quotes appear in the available data. While Home Depot lists 34 ratings, the aggregated score and specific feedback themes are not provided, making it impossible to assess common user praise or recurring issues.
“powers through tough spots comfortably”

“great for homeowners looking for a powerful trimmer”




