Hey Twerk, was reading some posts you had made on the TH900 and as you had a lot of experience with closed headphones I checked out your posts and came across this thread. Sounds like you enjoy your electronic music so I can relate.
In order of date of purchase (oldest to newest)
Sony MDR-7550 - in the past had sold a pair of similar Somy EX600s in favour of using an Amperior as a portable. Realized it wasn't quite the same and when then chance came to get these for a low price of $150 I jumped. While the EX600 have a higher treble amount, the 7550 is a notch above in overall refinement. Designed for stage/studio they have quite a long cable which can get in the way a bit when using it outdoors.. Ultimately, these are my hiking portables. In the summer it's too hot for closed cans and in the winter these are ergonomic enough to be worn under a toque (Canadian climate). I also use them at the office periodically as they are easy to keep in my laptop case. Sonically, they are bassiest and most deep sounding of my headphones. These are killer for electronic music, but their clarity works well for almost any genre. Very high sound quality from this 16mm (!) dynamic driver IEM
Audeze LCD2 (early revision still has wooden connector housing and exposed foam headband) - I have this as I had the opportunity to get this for a very low price. It was damaged slightly, cracked wood at the connectors, but in otherwise perfect sonic condition. This replaced my first HD650 which I had no intent on replacing - so beware of good deals! Probably my least used, but it always appreciated. It's stiff cable and modest headphone weight makes it more involved for listening. Mostly use it at my home desk with my O2/ODAC. I've listened to a number of Audeze, and apart from a classic LCD3, I have a sense that I have a very special version of this headphone - in that it sounds weighty, very detailed, clear with vast depth into its background. Sounds alive with jazz, solo and small chamber classical, acoustic and electronic (mostly in the glitch/ambient/ minimal techno vain).
HD650 - own this one for its natural sound and comfort. My interest in the 650 goes way back, and I knew it would make a good studio headphone as well. I do compose now and then so the 650 is a good reference as I am so familiar with its sound plus I trust its midrange. Recently, I've been more focused on piano, and the 650 is perfect for my digital Yamaha piano. I just plug the 1/4ijch jack in and the cable is long enough to not get in the way. Sound is perfect for solo piano. Of all my headphones it renders binaural sound recordings the most naturally. I can put the 650s on, play any music and tune out. On my second pair. This one I purchased for $250. At that price had to pick it up
MDR-7520 - after owning many closed cans, i hunted for one of these for years. regarded highly by those who are professional mix engineers, I sought it out for both mix engineering, DJing as well as portable use. In many ways this is my everyday driver. Rugged magnesium cups and quality build makes this easily transportable. Replaced its studio cable with an MDR-1r cable and now it makes a great outdoor can providing that it isn't too windy. Bass is among the best from Sony that I've heard. So easy to drive and can handle a lot of power load as well. I use this all the time, at office, at home directly from my PS4 and driven by my amp at my desktop.