1) Yes, I am a Sailfish user. I have been quite happy with the older generation hardware up to Xperia X. From what I read the newer generations have been more problematic. Yeah, after having skipped some I ordered the bleeding edge Reeder and was bitten by the disk encryption bug. Have been busy recently, should finally check what is the repair situation for that...
Android: After my Xpdria X HW got unusable as a daily phone I have used Android (mostly without Google). But general administration seems to be a lot of work a lot to learn. In GNU/Linux I know what to do without any extra effort. Time is limited...