Which is better for fine finishing?

The DCW210. Its variable dial lets you drop to 8,000 OPM, which is easier to control on fine grits. The DWE6421 runs at a fixed 12,000 OPM.

The DCW210's brushless motor should outlast the brushed motor in the DWE6421, and it has no cord to wear or cut. Battery packs, however, age and cost money to replace.

Is the DCW210 worth the extra $34?

Only if you already own 20V MAX batteries. If you do, you get cordless use and variable speed for $99.00 at Home Depot. If not, the $65.05 DWE6421 at Amazon is the better value.

Do both collect dust the same way?

Yes. Both have a one-handed locking dust bag and both connect to the DeWalt DWV010 or DWV012 dust extractors.

Can I use the same sandpaper on both?

Yes. Both take 5 in. hook-and-loop discs. The DCW210 pad has an 8-hole pattern, so match your discs to that.

Which is better for a small shop or garage?

The DWE6421. It runs on wall power with no battery charging, costs less, and the cord is rarely a problem at a bench.

DeWalt 20V MAX XR Brushless 5 in. Random Orbital Sander (DCW210) vs DEWALT 5 in. Corded Random Orbital Sander with Dust Bag (DWE6421)

Buy the DCW210 if you already own DeWalt 20V MAX batteries and want cordless freedom plus variable speed from 8,000 to 12,000 OPM. Buy the DWE6421 if you want the lowest price and a corded tool that never runs out of power. As of November 3, 2026, the DCW210 is $99.00 at Home Depot and the DWE6421 is $65.05 at Amazon, a gap of about $34.

Today the DEWALT 5 in. Corded Random Orbital Sander with Dust Bag (DWE6421) costs $33.95 less at its best price.

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