For those hesitating, there's 3 days left in the IGG campaign, but still some "secret" perks (
the token in this URL unlocks this perk) with the special XDA price that makes the Pro1x cheaper than the Pro1 (527€ at today's currency rates).
If that can help, I made a comparison video with Ubuntu Touch and SailfishOS side by side on the Pro1, with some discussion on how the keyboard compares to competitors too:
(I'm not sponsored, I just had a broken device under warranty that I kept for about 6 months while stocks were very low, and when they finally could replace it, they let me keep the old one for dev tests.)
And also another one on LXC containers within SailfishOS, more detailed than the short video I posted here some months ago: