Hello.
Having switched from Xperia X to 10 III. Screen colours and sound from jack are really great. As usual os is very responsive and pleasant but you have to accommodate with some bug and look for fix from forum.
Used a mixed of backup ([4.4.0] Can't restore backup (to another device)), and file copy (to remove old stuff) for transfer. Many app were missing from jolla store but can be found from openrepos installed from CHUM. Need bluez5-tools to pair with car (How to connect to car bluetooth when car is requesting pin - #5 by frojnd ). Currently happy but looking for emojis !!