For me advantages N9 has over Jolla would: be OLED screen (with LPM), better camera (IMHO) and fully functional NFC. I can't comment on build quality of Jolla, but N9 is really good in that regard. As for size for me N9 is just about right, but I doubt that Jolla bigger size makes it less functional.

The main reasons I still haven't made the switch to Jolla would be that somehow N9 still is quite usable, and when N9 was introduced I felt like it's more advanced that the iPhone (or other phones) of the era - something one can't say about Jolla.

Still Jolla is the way to go (their SW development is really unlike - which is a huge advantage in my book). I just wish they would either score big contract with some HW manufacturer to use their OS, or go all in and introduce new device themselves (Jolla 2 anyone?) Either way we would then be unable to complain about missing this/that feature in hardware.Till then - my N9 got new battery and is still going strong.