I probably can’t, really. I say “probably integrates best” because iX has some kind of deal with Storj, which results in a “Storj iX” storage provider in EE. But whether that does, or will, do anything beyond simplifying the credentials entry for that provider, is something I don’t know.
Jottacloud is both more expensive than iDrive e2, and doesn’t appear to support the S3 interface used by, well, just about everyone any more. Doesn’t exactly sound like a win.
In case you need more than that (SMB, or team up with a handfull of fellow users, maybe?) at Hetzner you can get a dedicated machine with 8x 22 TB HDDs at $227/month. With a RAIDZ2 and assuming you are filling the drives up to 15 TB each that’s 90 TB usable or $2.50/TB*month.
Unlimited transfer at 1 G/s.
And you can use snapshot and replication tasks which is the fastest and most reliable method available.
Just to add a data point that might be useful for some.
P.S. SMB = small or medium sized business, not server messaging blocks.