Im currently looking for a good quiet pair of cans so i can expieriment with mic placement techniques(around drumsets and Amps). My price range is preferably between 75-170. But if there is a jewel at 200 dollars ill splurge. I dont intend on spending over 200. Some models im looking into are:AKG k 171,BeyerDynam DT 250, Senn HD 280& 265,and Sony MDR-7506& V700DJ(i am not locked into these please give additional brands & models). I want an equal balance of isolation and freq response. Please be brtually honest these selections have come from online. Thanks in advance to everyone who replies. this is my first post and hope it works out well.