K's 500 v2 has a warm, full and energetic sound with good end-to-end reach, pretty much spot on for mainstream music. In contrast BK is warm tilting toward neutral, and overall more smooth, mature and relax. While I still prefer BK overall, the difference is really small. For example, there are a few who said they think BK is a bit too neutral for their taste - I would think K's 500 v2 might be just their cup of tea.
Okay thank you, I'll definitely look into the K500. Any words on how it compares to the Masya?