I actually couldn't wait any longer, so I went to see the DT 770 Pros in person and they are AMAZING — thank you so much for recommending them!! I might not have found out about them if it weren't for your reviews. They are by far the most comfortable headphones I have ever used, and there is no pressure whatsoever on the top of my head.
Since I only intend to use it for listening to music, I think I prefer the 80 Ohms model more than the 250 Ohms model. However, I think that I might want to buy an amp to just boost the volume for those days when you want music to be stupidly loud. I read your review comparing your two portable amps, and you recommended the SoundBlaster E1 towards the end, but I'm wondering, does it still not work with your Apple devices? I have a Macbook Pro and iPhone 7, so I'll need one that works…
Thank you again for all the info — you're a legend!