I was looking for off-site back options and S3 seemed to play nice with restic (I had been backing up to my NAS).

Wasabi was interesting because they charged a flat fee pert TB and don't charge for egress (when I have to restore).

They've been rock solid for a few years now, in addition to restic backups, I'm using them for my terraform state file storage and a static site hosting https://stronk.bond.