This is an opinion from a person who owns a pair of headphones for the 1st time (I used earbuds previously)
First, these headphones are SUPER comfortable. I had experienced cheap headphones in the internet-coffee shop that I went to and I could not wear them longer than half an hour, and they hurt my ears. MDR-ZX300, however, is extremely comfortable. I can wear them all day long. Second, the sounds is different from common earbuds. I am not expert in detecting the difference between the earphones/ headphones. But one thing that I notice is that the sound appear to come from faraway. Thus, even when I listen to music for a long time, I don't feel like my eardrums are bombarded with sound. Third, it is a beautiful piece of gadget. It looks cute, durable and is easy to adjust. The metallic part is shiny and sleek.