I'm running my LG G8 til it dies. It has a really good line out, they actually built the damned things to have decent audio. It blew my mind. People talk about phone audio on a "phone audio" scale. In that context, we can say many phones sound great. But on a more general audio scale, phone audio is like motherboard audio used to be a lot of the time. Well... they had dedicated circuitry. On most phones, the bulk of the audio hard bits comprises of a small amount of real estate on a teeny little package.
Shame they won't be making more. Just having a headphone jack is something these days... to have one that actually outputs good sound, with the ability to power every portable thing to deafening volumes, is just rare air to be breathing. I covet it immensely.
For me, that really is the most important thing. I stream ~4 hours of music on it a day when I'm at work. And I work on my feet, so carrying around an extra device is just not happening. I wouldn't even carry a phone there half of the time if I didn't need to be reachable at all times, because it hogs a pocket I could often use for anything more practical to have in the middle of a repair. The wire is the one compromise I accept. Bluetooth would be easier, but then I have to contend with battery life, and I'm not just talking about the earbuds. IME, the moment you go heavy with bluetooth listening, you're bringing chargers around, leaving them places for convenience... not the life for me.