I bought a Hifiman Nano headphone BEFORE I found the ASR forum, Armirm's review revealed the Nano distortion problem. I still want a good planar headphone, but I don't know whether to attempt an upgrade to Arya ($759 if Hifiman will allow me to upgrade), or just outright buy the Sundara ($299). I paid $499 for the Nano, not sure of the credit allowance yet. I'm also flirting with the idea of just ordering Dan Clark Drop Aeon 2 Noire open backed ($529 which will be around $200 more than the Arya will be with trade in). I really like the planar headphones, and I'm just heartbroken over my Nano purchase, they had great potential. Does anyone have a suggestion that might satisfy my planar craving?