Yo! I hear a lot of good things about Planar Magnetics, people seem to rave about them for the clear clean sound. However, having said that, people usually don't rave about them being basshead can's, but how could they honestly, they are open backed. Nothing like a closed back dynamic driver that is totally in your head, shaking you up, making you get out of bed. HAHA!
I'm not in the income bracket to afford any Fostex can's honestly. But I also hear that they produce amazing sound even for their closed back nature, so not surprised you are enjoying them. I am very aware of the Monolith THX 887 amp however. Cause those are one of the many amps I recently researched, before pulling the trigger on the S.M.S.L SP200. What you have there is a quality amp bro, should bang your head around quite nicely!
And yes, I really did enjoy that latest song you posted, you listen to some good music. I loved hearing the guys story in his song, I think many can relate you know? Feel free to keep posting songs, so far I haven't hated anything you posted.