I realize that this a narrow genre to choose headphones on, but it is where I have the most trouble. I have the HD800s, and they just don't have the low end power to satisfy me when I listen to a good organ recording like Anthony Newman on Newport Classics. I figure if I could get this correct, the rest will solve itself.
I have the LCD-2s sitting on my desk, and while I do like them, they are too uncomfortable for me.
I use ALAC out of my MacBook Pro to Schiit Bifrost and Lyr which I am happy with.
I'm a bit enamored with the Fostex TH900s. How would they work? Any others I should consider?