The HE-500s have been with me a long time and that is through hearing pretty much every other planar there is(albeit briefly) alpha dogs, mad dogs, lcd2.2,3,X. HE-5LE. The 500s are still my favorite, though I have been wondering about upgrading to an LCDX or HE-6 or HE-560, the 560 being the most likely candidate. The 500s do so many things well, and they make me smile the same way I smile when I listen to the symphony live. Comfort can be improved with better pads, also the sonics can be modified that way to your tastes, as well as modding the cans is easy. To have a can that is just as good with rock as classical with a mostly neutral balance is what truly impresses me about the 500s.
Unrelated, has anyone heard a current amplifier with the 500s/he-6? Something like the First Watt f1 or f4? Or for that matter what the maximum power handling of the 500 is? The F1 seems like it would be underpowered and the F4 in SE would be fine but in dual balanced mode with two would be too much at 100W at 8ohms. Granted such a setup would cost $4400 to have haha, just curious as it could always be used for a speaker setup as well.