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Gets the job done, too much vibration
The sander works well and has typical DeWalt quality in build. However, the vibration is excessive in my opinion. I've used other oscillating sanders that produce a lot less feedback for the user. This thing creates some serious feedback that gave my friend hives when he used it.

The built in vacuum is my favorite feature, and works really well at picking up debris, even dust-size paint particles. You should still use a face mask if you're sanding anything other than wood, but the vacuum drastically cuts down on air born debris.

NICE LITTLE SANDER
I ORDERED THIS SANDER JULY 5 AND IT ARRIVED TODAY, JULY 8. I HAVEN'T HAD A CHANCE TO USE IT YET, BUT KNOWING DE-WALT TOOLS, I AM SURE I WON'T BE DISSAPOINTED WITH IT. THE PRICE FROM AMAZON DOT COM WAS GOOD AND THE DELIVERY, IN ONLY THREE DAYS WAS EXCELLANT. I ALSO ORDERED A BOX OF SANDING DISCS WITH THE SANDER. THE SHIPMENT ARRIVED VIA UPS IN EXCELLENT CONDITION. THANK YOU AMAZON DOT COM AND UPS. I'LL WRITE ANOTHER REVIEW OF THIS PRODUCT AFTER I HAVE HAD A CHANCE TO PUT IT TO USE ON A PROJECT. I OWN MANY DE-WALT POWER TOOLS, FROM A COMPRESSOR TO SEVERAL CORDLESS DRILLS AND A RECIPROCATING SAW AND I DON'T EVEN LOOK AT ANY OTHER BRAND. DE-WALT IS THE BEST.

Dewalt is the best
DeWalt D26451K 3 Amp 5-Inch Random Orbit Sander with Cloth Dust Bag

One the best sanders I have ever owned and believe me it gets it used daily.

nice sander
This sander worked well taking a few cabinets down to bare wood for refinishing. Works best horizontal sanding, a bit heavy for vertical work. Changing sanding discs is quick and easy. Especially like the shop vac port which made for very little dust.

What A Sander Should Be
Yeah, this is the definately sander to own (or equivalently the PC brand, which is also good).
Aside from the effectiveness of the machine itself as a sander, I truly appreciate the instant ease of changing the sanding discs. Too many times I've changed from 60 grit to 100 grit to 180 grit and then need to go back to the 100 or 60 again. Presto chango! Just remove the current disc and use the old 100 disc again.
This sander is not wasteful like the quarter sheet sanders, where you only get one use from the paper, these sanding discs can be used and reused many, many times and always stay tight on the sander. The discs do not tear or crease when you remove them, there's no sticky mess or clamping gymnastics, the hook and loop attach lets you change and rechange discs instantly with ease-ease-ease. This aspect alone has revised my entire philosophy of machine sanding.
And those discs do last forever. So maybe they cost a bit more up front but you can save them and get every bit of use out of them by reusing and reusing and reusing them until they are totally depleted. Definately worth the extra cost which can also be moderated by buying in bulk from a discount supplier. I keep my used discs in a 5 1/4 floppy disk strorage box, fits perfectly and prevents curling.

One criticism of the unit though, the "rubber" base pad does not last forever, mine just plain disintergrated after about four years and I had to replace it for about $20. But even though I grumbled about that I'm still very keen on this sander.
Also, I have the older model with the plastic dust collector which I think was better than the cloth bag.
In short, its the best, and most cost effective, sanding investment I ever made and I should have bought one of these years before.