So...I got my HE-400s in last week.
Favorite headphone. Without question.
My HD 600s are great for when I want to relax to some jazz or classical but for everything else, the HE-400s are going on my head. Love these things.
Exactly my thoughts. While I'm perfectly satisfied with the amount of bass in the DT990 Pro, it's definitely not the bass monster I thought it was going to be based on the hype. The treble is also a lot more even and less piercing than I was expecting, and this is coming from a guy who's sensitive to piercing treble.
Got a pair from the Amazon sale before they shot back up to $200 within days of ordering mine. Enjoying them quite a bit so far. I pretty much bought them just for gaming but jeez, they might just become my go-to everything headphone.