FWIW, I’ve owned an XA2 for roughly 18 months, waiting to install Sailfish. But I use the built-in Sony FM radio all the time, as I used the built-in FM radios on all of my Symbian phones, and I’m not going backwards. No FM radio, no customer.
Then VoLTE struck and I’m afraid that’s gone on the must-have list, too. If I’m going to be stuck with a phone that doesn’t support VoLTE, I’ll limit my headaches and stay with Android. (Here in the US, Verizon apparently does support VoLTE on the XA2, but I currently hate T-Mobile less.)