@michaeldavies keep in mind: Linux phone's audio/calls stability still needs work, there is no such thing as a painless daily driver phone at this moment.

I own OP6, Pinephone Pro, Xiaomi Miatoll. I do not recommend PPP (bad battery life, overheating CPU, keyboard case has issues, I can go on...).

Fairphone 5, Poco F1 and OP6 should be very good (quite close to be ready for daily driving as a phone). Miatoll is a new but promising development. Note: FP5 and Librem5 are the only mainline devices, for which manufacturer supports the development.

If you want to daily drive a Linux phone right here right now, FLX1 is an exception - it's ready... at expense of basic security (it uses outdated kernel) and not running usual Linux stack under the hood.

Ubuntu Touch phones have similar upsides/downsides to FLX1.