Hmm, so it wasn't so much being underwhelmed by the performance of the headphones, but rather issues you had with the sound itself?

You didn't experience pain with the dt770, but you did with the 560s? That's kind of strange actually. If it's something with actual physical pain (and not just discomfort that you'd get from, for example, piercing treble) you may way to see a doctor about that. You really shouldn't be feeling any pain at all when listening to headphones. Except maybe your wallet!

If it's more treble sensitivity (which still seems odd if it was only the 560s), maybe give either the 650/6xx a try, or the 660s. Both are much darker than the 560s, but are still incredibly capable headphones.