Quick takeaway
WEN 40439 40V 16 inch Cordless leads this matchup 0 to 1 on measured spec rows and by 33 points overall. WEN 40439 40V 16 inch Cordless is also about $230.00 cheaper at the latest tracked price.
Snapper 21 inch Self-Propelled vs WEN 40439 40V 16 inch Cordless
Choose Snapper 21 inch Self-Propelled if...
Pick Snapper 21 inch Self-Propelled if deck size are the reasons you are shopping in this category. It currently costs about $230.00 more, so make sure those wins matter to you.
Choose WEN 40439 40V 16 inch Cordless if...
Pick WEN 40439 40V 16 inch Cordless if its current price, brand, or design fits your shortlist better than Snapper 21 inch Self-Propelled.
Side-by-side specs
This is the raw comparison view. It is there for the rows that actually decide the purchase, not just the headline winner badge.
Battery and power
| Spec | Snapper 21 inch Self-Propelled | WEN 40439 40V 16 inch Cordless |
|---|---|---|
| Power Source | Corded electric | Battery (cordless) |
| Voltage | - | 40V |
Dimensions
| Spec | Snapper 21 inch Self-Propelled | WEN 40439 40V 16 inch Cordless |
|---|---|---|
| Deck Size | 21-inch ✓ | 16-inch |
| Weight | - | 60-80 lb (battery + tool) |
General
| Spec | Snapper 21 inch Self-Propelled | WEN 40439 40V 16 inch Cordless |
|---|---|---|
| Brand | Snapper | WEN |
| Category | Lawn mower | Lawn mower |
| Drive | Variable-speed rear-wheel drive | - |
| Type | Self-propelled walk-behind | Walk-behind |
The verdict
Based on 8 spec comparisons plus user ratings, the WEN 40439 40V 16 inch Cordless comes out ahead with a stronger overall score.
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Comparison FAQ
These answers explain how the score is built, when the lower-scoring option still makes sense, and what to confirm before you buy.
What is the Snapper 21 inch Self-Propelled vs WEN 40439 40V 16 inch Cordless score measuring?
VSFinder compares 7 visible spec rows, then blends those wins with current price and Amazon rating signals so the page reflects both raw specs and real shopping context.
When does the lower-scoring option still make sense?
The lower-scoring model can still be the better buy if the few areas where it wins line up with how you shop. That matters most when those wins cover the exact features you care about more than the overall leader.
What should I confirm before I buy?
Confirm the live Amazon listing for price and availability, then double-check the few spec rows that matter most to your use case. We currently track $619.99 for Snapper 21 inch Self-Propelled and $389.99 for WEN 40439 40V 16 inch Cordless.