Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sennheiser PXC 450 vs Bose QC15

Sennheiser PXC 450 vs Bose QC15The verdict Sennheiser PXC 450 are fun to listen to. I noticed nuances I have never heard before in my music and an overall I just liked listening to them. I did not have this experience with the Bose. The Bose sound decent but the clarity & fun was missing and I just didn't enjoy listening to them. I would force myself to listen to the numerous song with each. I was board with the Bose and wanted to listen to the Sennheiser every time. The Sennheiser simply sound better. FYI: I was in a relatively quite environment when I did my tests (this is where I will be doing most of my listening). I will be returning the Bose (still in my 30 day trial period).Sennheiser PXC 450Pros:-sound-by pass switch to run without battery powerCons:-bulky and heavy-not easy to wear glasses