I currently use Denon D2000s with an EMU 0404 USB DAC/amp connected to my PC. I've already ordered a Magni amp since the amp on the EMU may not be powerful enough.
I use my headphones primarily for aggressive music like metal and hip hop (bass is important), but overall performance is also important for gaming, movies, and other genres of music. I will be using the headphones for 8+ hours a day so comfort is extremely important. I have done some research and I'm thinking about the 3 choices below (looking to spend less than $800 and I would like to try open headphones):
Hifiman HE-500 - from what I understand, these will provide excellent quality but they are very heavy and uncomfortable. I would have pulled the trigger on these already, but I'm concerned about the weight and discomfort for long use.
Sennheiser HD650 - strong track record, but may not be the best for aggressive music (could these even be considered a downgrade from D2000 in this regard?)
Audio-Technia AD2000X - I don't know much about these, but A900s are super comfortable to me and I would love my next pair of headphones to be this comfortable.
Any insight into these 3 in regards to aggressive music and comfort? Are there any other headphones that would suit me?