I've had the SM3 as a loner pair for several weeks, here's the summary of my impressions:   Pros: - Very refined sound reproduction - Bass has top quality and just the right quantity for me - Extremely detailed and attractive mids - Almost equally good highs that never get too sharp - Very realistic timbre for a balanced armature based phone - Large Soundstage - Excellent separation - Decent isolation - Very good cable   Cons: - Forward / in-your-face mids can be fatiguing with some music and/or prolonged listening - Not...