Been looking into headphones specifically for the aforementioned genres. After doing some research within the forums, and many many many threads later, i've come to the conclusion that the HD600 and HD650 are the top contenders. Which do you guys suggest and why? Any opinion will be appreciated. Also, i would like to throw into the mix AKG K501 (if a used pair could be acquired) and the Sony MDR-SA5000 ( detail monster, so i've read). Thanks again!