I currently have M-Audio BX5a Deluxe studio monitors which are exactly up my alley and play everything I throw at them wonderfully. I listen to a lot of EDM, particularly styles with an emphasis on deep sub-bass but not exclusively. I would like to know what headphones I should be looking at when coming from something like the BX5a studio monitors. I prefer the over-the-ear and open-back which I understand this limits my options when it comes to deep sub-bass. I've seen some recommendations on the DT990, but I was wondering if there were any other headphones I should be looking into. I really don't want to spend over $300.