I'm not too keen on the fact that AeroFS runs on Java as I would prefer to run Java free systems as much as possible (Go version would be nice =) but am willing to live with it if that's the only option.
Exactly, I removed java from all my computers about week ago. And since I am having my personal debian server, I installed ownCloud 5 on it for filesyncing.. and I am happy so far.. the clients are in C++
Every single release of OwnCloud includes security fixes. From XSS to SQLi. I have very little confidence in that PHP project from a security point of view.
See my response here: https://news.ycombinator.com/item?id=5484566