Instruct: Classify a given review as either positive or negative.
Query: Not as good as expected.

I chose this sander based upon a review in Consumer Reports which ranked it #2 (behind a Craftsman sander). The dust bag is not worth using. I could never keep it attached. The vibration from the sander would constantly cause it to fall off. I bought an adapter for my shop vac which mostly fixed the dust extraction issues. Another problem is that the sander bogs down significantly when performing heavy sanding duties. DeWalt's quality seems to be constantly falling. I wish I had bought the Craftsman sander instead.