My money - and a few gigs of HDD - are on Storj. They already have a product you can download and have been able to use for over a year.
They will likely fill different niches (along with MaidSafeCoin and IPFS), but it'll be interesting to see where those niches end up being.
Yes, I am also using the Storj software too. It was doing great with so many peers
Siacoin has a working product.