I'm currently using a Sony Xperia X running Sailfish OS but I'd like to switch to a Pinephone running Postmarket OS.

I respect that you're this motivated to remain free from the clutches of the corporate overlords - but damn, it sounds exhausting.

as someone who is waiting on their pinephone order right now, a major factor for me is supporting the existence of not-google not-apple. i want other options and even though they are not great yet, if enough of us support that niche it will become better. i hope enough people buying into it now will hasten viable daily driver phones running linux proper.

I think your mobile experience and capabilities is drastically different than 99.999% of cell phone users, I could probably put another 9 in there and still be right.