i'm considering only balanced solutions so far. so:
Schiit Ragnarok (especially looking forward to this one, not yet released)
so far these are in my price range in my part of the world.
i will accept any proposals (in fact i thank anyone providing any).
I recently picked up one of the new Questyle CMA800R current mode amps and have been using it for about 3 weeks with the X-Sabre and HD800.
It's not balanced, but I consider it superior to the Bryston or the Sennheiser amps.
I'm still getting it all set up and broken in here but so far with the HD800 it's been nothing short of a revelation.