fish1050
Headphoneus Supremus
I would get a Shanling M3X if you want to upgrade, best DAP for the price range (my daily driver), I still use my A55 with a Fiio Q3 with this cable https://www.fiio.com/productinfo/576983.html (if you don't want to spend $300+).
Yeah I am looking at the M3X as well but likely waiting until black friday as price is to high right now. Maybe even an M5S if a good deal can be had and a better match for me as I don't want android and I don't do any streaming. I was hoping for an updated M2X but @Shanling says there is no plan for a new version any time soon. That basically leaves the Q1 and A55 for non-android DAP's I would consider. Not holding my breath that Sony will update the A55 since they haven't for 3 years. Unless Sony shocks me in the next few months my dreams of another Sony DAP are fading fast.