Instruct: Classify the given Amazon review as either positive or negative.
Query: good coffee, not so good product

The coffee tasted much better in these, but:1. After two cleans, the top mica knob (I think it mica instead of glass) cannot screw back in any more.2. You have to dry inside the pot with paper towels or it will rust. I left my to dry by itself and rust start to show inside the pot.So after two used, I have to throw this out because of the rust and the bad knob.