Updated October 21, 2026 · Pelstro Editorial Team · Research-based buying advice
We may earn a commission from qualifying purchases. See our affiliate disclosure. We have not physically tested these saws; recommendations below are editorial judgments based on the linked manufacturer information.
Executive summary
The DWS780 is the clearer choice if you specifically want factory-integrated XPS cut-line guidance. The DWS779 makes sense only when its exact package, condition and total price offer a meaningful saving. Both belong to DeWalt’s corded 12-inch, double-bevel sliding miter-saw family. The extra money should buy a useful workflow feature, not an assumption that a higher model number automatically cuts better.
30-second decision guide
- Frequent trim and repeated layout marks: favor the DWS780 if you value its integrated shadow-line system.
- Occasional wider-board crosscuts: compare the DWS779’s actual checkout saving against blade, support and extraction costs.
- Shallow bench against a wall: measure the operating envelope first; neither model should win on brand alone.
- Used or older stock: verify recall status and the exact type number before discussing price.
For a fuller assessment of the premium model, read our DeWalt DWS780 review. If bench depth is the limiting factor, start with our small-workshop miter saw buying guide.
DWS779 vs DWS780: the useful differences
| Buying question | DWS779 | DWS780 |
|---|---|---|
| Basic configuration | 12-inch corded, double bevel, sliding | 12-inch corded, double bevel, sliding |
| Factory cut-line feature | Do not assume an XPS-equipped package; check the exact listing | Integrated XPS blade-positioning system |
| Why consider it? | A worthwhile saving on the exact saw and package | Integrated line guidance for repeated setups |
| What changes the verdict? | Condition, availability, accessories and recall status | Price premium, workshop fit and local model variant |
| What we have not measured | Cut accuracy, vibration, dust extraction and long-term wear | |
What XPS changes in day-to-day buying value
The DWS780’s light projects the blade’s shadow onto the workpiece to indicate the cut position. Its practical attraction is easier alignment with a pencil mark. It does not straighten a bowed board, square a misaligned fence or replace careful setup. Blade choice, stock support and calibration still matter.
For a homeowner making a few simple cuts, repeated alignment may be a small part of the project. For someone moving between differently marked trim pieces, convenience can matter much more. Think about how often you will use the feature rather than treating it as a universal requirement.
Do not add the cost of an unofficial light kit to a DWS779 and assume the result is identical to a factory-equipped DWS780. Compatibility depends on the saw type and kit. Any modification should be checked with the manufacturer, including its effect on guards, wiring and warranty.
Capacity: read the chart for your workpiece
A 12-inch blade diameter does not tell you the whole cutting envelope. Board height, board width, miter angle, bevel angle and how the stock is positioned all change what fits. Use the manual for the exact type number and local variant. A headline maximum crosscut is not a promise that the same board fits at a compound angle.
Write down your largest recurring stock size and the angle you actually cut. A wide flooring board laid flat and tall baseboard held vertically ask different things of a saw. If most of your work is narrow molding, you may be paying for slide travel you rarely use. Our main miter saw shortlist covers other configurations.
Workshop footprint can outweigh the price difference
Measure with the saw in its operating position, including its slide movement, hose bend, handle access and supported stock. A saw that fits on a bench while folded may not fit while cutting. Allow space to change miter angles without trapping the hose against a wall.
The Makita LS1019L uses a reduced-footprint rail arrangement; Bosch’s GCM12SD uses an Axial-Glide mechanism. These are alternative designs worth investigating for a shallow station, not proof that either is automatically smaller in every dimension or easier to carry.
Compare the whole setup cost
Use this calculation: saw + suitable blade + stable mounting or stand + stock supports + extraction adapter and hose = usable setup cost. Add delivery and taxes when comparing offers. Remove items you already own only if they are compatible.
For example, a hypothetical $120 saving on the saw disappears if that package needs $80 of equipment the other includes and another $40 in delivery. These are arithmetic examples, not live prices. Compare equal packages before deciding that the cheaper model is better value.
Check whether the seller is supplying a US DWS780 or a regional suffix such as DWS780-QS. Voltage, plug, local warranty and supplied blade can differ. Do not order a regional model solely because its headline price looks lower.
Check older DeWalt saws before buying or using them
The US recall covers certain DWS779, DWS780 and DHS790 saws with date codes 2019 04 through 2022 04. The rear guard can break or detach. If a unit is affected, stop using it and follow DeWalt’s repair instructions. Do not assume a used saw is cleared because it looks clean or the seller calls it refurbished.
Check the date code and inspection markings against the CPSC recall notice and DeWalt’s official recall guidance. Confirm the exact unit with DeWalt if its status is uncertain.
Common buying mistakes
- Assuming every DWS779 listing includes the same guidance system or accessories.
- Buying a 12-inch slider for a bench that cannot accommodate the operating slide travel.
- Comparing a used, incomplete saw with a new complete package.
- Expecting a light to compensate for blade selection or alignment.
- Using a miter saw as a substitute for a sheet-goods setup; see track saw vs circular saw for long panel cuts.
Frequently asked questions
Is the DWS780 automatically more accurate?
No measured accuracy comparison is claimed here. XPS helps show blade position, but both saws still need inspection, adjustment, suitable blades and correctly supported stock.
Is the DWS779 still worth buying?
Potentially, if the exact unit is supported, complete, suitable for your local power supply and meaningfully cheaper. DeWalt’s US catalog has shown it as discontinued, so verify remaining stock and service support rather than assuming current production.
Can either replace a table saw?
No. A miter saw specializes in supported crosscuts and angles within its capacity. It is not a general solution for long rip cuts or breaking down full sheets.
Should I upgrade an existing working DWS779?
Only if the missing feature solves a recurring problem. A correct blade, better support or extraction may address your bottleneck more directly.
Final recommendation
Choose the DWS780 for its factory cut-line feature when you will use it repeatedly. Choose a DWS779 deal only after checking the exact package, older-unit recall status and complete setup cost. If neither fits your station, change the shortlist before spending more.
Sources and review method
We compared the US manufacturer listings for the DWS779 and DWS780, plus the recall information linked above. We separate published features from our interpretation of buying value. No measured cut-quality, dust-capture, noise or durability results are claimed. Product revisions and regional packages may differ.