Thanks. Having now spent a bit of time with the Liberty 3 Pro TWS, in short, you're right, I may as well stick with my phone for listening on those, regarding sound quality.
However, for walking or pottering around without wires, and not being attached to the nagging of a phone, I will be using the DAP on Bluetooth at times. The ZX300 is beautifully pocketable and so are the LP3s for grab and go. I've paired them without issue, so it's a nice convenient option to have.
Oh, and of course you'd hope all TWS will sound like garbage when you compare them to IEM's in the price bracket of the FA9