Instruct: Classify an Amazon review as either positive or negative.
Query: A Mistake

I own a half dozen pair of Sennheiser headphones dating back to the 1980s and all are excellent. These are the large size, both open air and sound deadening. I was looking for a pair small enough to fit in my commuter bag and use with iPod and computer. When I got the PX 100 I found I could not wear them comfortably, the audio was really bad, and they did not keep out the noise of the bus. I gave them away. I then ordered the Sennheiser in ear model and they have been perfect!!Forget the PX 100.Mike