I really, really wanted to love restic, but it makes far, far too many tiny size files for my main remote backup use-case: backing up dozens of TB offsite to Glacier Deep Archive.
Eagerly awaiting a configurable chunk size, if they decide to do that.
Kopia looks great! I am currently using Duplicati for my personal machines, but Mono and its dependencies have been less than reliable. borg/restic/... look good but seem like only part of a solution, having to write my own scripts and crontabs with monitoring etc on top seems counter-productive.