I know how properly EQing headphones can really improve sound. I have spent many hours getting my modded SR225i's to be as flat as possible and can hear the improvement. Well, I'm hoping to one day move beyond my Grados and will be attending RMAF to hear many options (HE-500, HD600, DT-880, etc.). My dilemma is how do I listen beyond the basic EQ of whether it is bass heavy or sparkly etc.? At a meet I can't spend hours getting the cans EQ'ed and then compare them on an even plane to my current setup. Any suggestions for things I should be listening for?