hi everybody, I'm searching for a headphone that are comfortable, Good sounding and have addictive low bass. Now I'm using Bose Mobile On ear headset, they're pretty good but i want to upgrade to ultrasone DJ1/DJ1 pro/ Ath M50. Which one of them have a damn good bass, better than bose's bass, with wide staging, good separation and pretty forward vocals? Help needed. thank you.