Just a heads up, my previous headphone was FA-003 and it really serves its purpose well and is definitely the best bang for buck. In fact, I had been taking a great amount of notice about this HD600 vs HD650 debate for a very long time now but decided to go for FA-003 previously for lacking the bucks to buy one of this. One thing I dislike about FA-003 is that wearing it to listen for music for a long period always makes my head feel uncomfortable (even after adjusting the head band in various level), particularly the clamping force that I had. The listening experience is good, but the comfort always prevent me from really enjoying music for a long time.