I think it is worth giving SpiderOak a try. I've been a SpiderOak customer for several years, and have been quite satisfied with it. The UI wasn't the best at first, but it has gotten better recently. I haven't used rsync.net for a while, but their service is great too. It just takes a little more work to set up.
I've had my reservations about companies that make such bold claims as yours but I will look into your platform more and give the free trial a whirl.