Instruct: Classify Amazon reviews into positive or negative sentiment
Query: We own several of these, and they are great headphones

We own several of the Sennheiser HD201 headphones, and they have delivered quality sound and helped to reduce noise in our home.We have several PC's in a small area, and these headphones help keep the peace. They are comfortable to wear, keep extraneous sounds out when wearing them, and provide high quality sound.We tried one HD202, but really are happier with the HD201. In addition to being comfortable and delivering great sound, these are also inexpensive.In addition to fitting a PC, they work with the Palm Pre, and will probably work with other smart cell phones.