I was caught by the trap for a little while, but after getting 560s, 280 Pros and PR-1 Pros I realized I don't need anything else. I hear pretty much every detail in any given song and am satisfied with the frequency response of each headphone I have. One is open-back, the other is a closed-back and the third one is an IEM for when I'm outside. I don't really see any point in getting anything else since the hobby should not be about the gear, but about enjoying your music. And I'm glad I discovered the hobby, because now I enjoy music like never before.