Actually, for raw speed, rsync is much faster than any of the tools you mentioned (see e.g., https://github.com/borgbackup/borg/issues/4190). I really like a lightweight solution, where I do not even need any tool to restore backups. The tools you mentioned are great though.
Did you see the last reply on the thread you linked. The guy messed up ENV variable in borg and was doing too many account backups as new archives killing the cache when the same account was backed up next day. Borg will always be faster than rsync while doing incremental backups, but of course has a learning curve coming from the simplicity of rsync.
