I still have my DT 990 Pro, honestly for the price these are surely among the best headphones you can buy I firmly believe that. Granted a lot comes down to personal preference regarding fit, style and taste obviously - but IMHO these blow away anything anywhere near the price range that I've tried. They are definitely the best headphones I've ever had up to this point. For me they tick every box.
I've since upgraded my DAC and Amp, I was running them from a Fiio E7+Fiio E9.....sounded great don't get me wrong but I felt like there was more to be had, so I upgraded to the ODAC and Bravo V2 tube amp with an aftermarket tube I bought (Sylnania or something) and my god does the combo work well - kicks a lot harder, mids more forward and a bit warmer. Still largely the same sound sig but more of a warm grounded skew. Sounds amazing!
So ODAC > Bravo V2 tube amp > Beyer DT 990 Pro - total price £300 = audio nirvana!
Especially if you like detail and openness but you aren't allergic to bass or treble....
Amazing for gaming and movies anyhow truly, this is pretty much the consensus I feel, but for me with this set up they are now truly amazing for music.
I listen to Red Hot Chili Peppers, Linkin Park, Guns n Roses, The Prodigy, Kings of Leon and other bands like Greenday, Sum 41, Blink 182 and Papa Roach every now and then....I never listen to classical music and next to never listen to hip hop any more or rave music. But for rock I can safely say they are very lifelike and sound bloody awesome on this set up!
I have zero need for another headphone outside of raw curiosity on something like a DT 880 or an HD 650 but yeah I'm very happy with the DT 990 Pro with the V2 tube and ODAC combo.