After reading this thread and and a lot of the going wireless…, I finally ordered the TW2. It came in a bundle with the Aonic 215, actually cheaper than just buying the adapters. After returning a lemon, the second pair is really good.
I am a big Etymotic fan, my favorite iems are the Evo, then the Er4XR. Until recently I have used used an Etymotic Er2Xr with the Etimotion bluetooth cable for my commuting and walks. The cable stopped working after two years. I have or have had Jabra 65T, Sony Wh1000m3, Air pods and Air pods Pro first generation. I came to the conclusion that I do not like active noise cancelling and did not like the tuning of any of the mentioned Bluetooth iems and headphones.
Now I must say I am very happy with the TW2 with the Aonic 215. I find them really comfortable. They do not move at all and I do not have to adjust them. The sound is very nice to my ears, very neutral, as I like with the Etymotic. The sound is actually better than I expected. Passive isolation is pretty good. The environment mode is fantastic. Bluetooth connection both with my Iphone and with the Astell SR25 is flawless. I am truly happy with the purchase: an excellent product as a whole.