There is a ton of information and comparisons available online. Most of it comes down to preference to be completely honest. I realise that doesn't help you in your search though...Thanks for the quick response, the Momentum 4 Wireless does look like a great deal, is the HD600 still the holy grail or would the 660S2 be better?
I can maybe even get like Hifiman Sundara's with the M4W
I have been through many, many headphones. I still have the first HD650 I bought, and a HD600 that was bought in the early 2000s (Not by me, I've had her for about 10 years). Been through 4 pads myself. She is my daily driver. For everything else, there's Master Card.
Edit: worthwhile to note; I am constantly listening to music. Everything from classical, kpop, metal, throat singing, hard rock... Everything but mumble rap and whatever popular horse shit came out the past few years. The HD600 is perfect for gaming, music and movies. It is flat though. If you enjoy something more colourful, then I would look elsewhere.