I know these kind of discussions generally polarise people, and we end up with a bunch of subjective reports of how it does / does not work, but I'd really be interested to know if anyone has a use case where 1 or more os x machines and 1 or more ios devices have every synced in icloud reliably.
For the (subjective) record, I have never had icloud sync work as expected - it always finds a way to eat files.