In the sub-1,000 closed-back space, the AEON 2 Closed and the LCD-2 Closed Back are 2 of the best, IMO. The WP900 may not best these headphones for sheer technical brilliance, but it is also the most "fun-sounding", though.
The AEON 2 Closed is a warm headphone with a slight bass tilt. It is still comparatively linear in sound, with a balanced and lush midrange. The WP900, on the other hand, has a slightly "v-shaped" signature, with a heavier emphasis on its highs and lows; you'll get a stronger mid-bass presence, and a more energetic and lively treble section. Vocals are better on the Dan Clark headphone, as you get a very involving and rich tone; in contrast, the lower-mids on the Audio-Technica sound a little recessed, thus depriving it of some prowess in the vocal categories, particularly with male voices.
Both are great headphones that serve different purposes. For most forms of EDM, I'd grab the WP900; it presents an energetic signature with a powerful low-end that drives a strong and engaging bassline. The AEON 2 Closed is no slouch, however, and if you are not particularly fond of a heavier mid-bass, this is an excellent choice.