What is currently the best personal cloud application?

In light of the recent privacy scandals, I'm going to be setting up a personal cloud at home. I've seen a couple frameworks already (ownCloud being the best looking), but would like to get the community's opinion on the "best" one out there. Best can mean several things: - Secure in its implementation, - Open source (can't assume that I trust the people who have made it), - Has all the basic features (file browser/streaming, email, contact, etc.), - Is visually pleasing. Any ideas? When I choose a piece of software, I'll be writing a detailed tutorial on getting it set up on Ubuntu and securing it before it goes online.