Thank you everyone for keeping this thread alive. I've been drawn to the 598 since I first saw images online. Have since seen them with my own eyes, and listened to them at some length, although in limited situations. I have to say I'm intrigued. I'm in Tokyo through the summer, and they are wildly popular here, sold out for the past few weeks at one of the city's largest retailers. I'm considering these, but also looking at some other possibilities, including headphones, amps, and DACs.
Here's my question. If your budget allowed you up to around US$600, would you stay with the 598s or seek out something else? Buying the cheaper phones would allow me to reallocate for other purchases, so I'm curious about the depths of your commitments to the 598.