Consider the Lehmann Linear. I think it is seriously underrated and I don't know anyone else who uses one.

I have one and use it with my iDSD Pro as a DAC

It drives my Arya better than anything else I've tried, and it is quite astonishing with the Thieaudio Ghost

Edit: Apologies, I just noticed it is way above your budget, but I would see if you can audition one, and save up or see if you can get one second hand. I bought the Linear over the Rupert Neve as that was only £150 cheaper