I am almost 30 days into their trial and really impressed with the software, it just works. Select the folders you want anywhere, with versions, it sits in the background and doesn't annoy you. I was going to quite happily carry on paying for the comfort of knowing if the worst happens I'm covered. All the alternatives mentioned like dropbox and google drive kind of suck. You have to move your files to the correct folders and I don't really trust their version control if hit by some sort of crypto malware.
I'll probably just stump up the higher price.