OneDrive. If you can get 5 other people to go in on a family plan with you, it's $17/year for 1TB storage. You can get OneDrive app for your phones and tablets to auto sync camera roll, etc. to OneDrive. As an added bonus, OneDrive is really well integrated with Windows 10 (if you are a windows user) so your pictures will just magically show up on your system as files you can drag and drop.
That's what I did. The 6 copies of office + 6x1tb cloud storage is hard to beat, especially if your employer is part of the HUP or you get it at a good discount otherwise.
I looked into other services but nobody seemed to compete, especially since I needed ~250gb minimum.
OneDrive is terrible in windows to sync, is always trying to sync even if you are editing a file, so make you PC/Work slower. When you share and if add more files sometimes new files don't appear in the shared link. Shared Link URL are too big and your email will go in the URL.. I don't recommend at all. I'm just forced to use for work.
And if you know somebody from Microsoft, they can give you an employee discount. With the discount it's around 3 USD per person per year for 1TB storage each.
Yeh I'm gradually moving from Google to OneDrive for photos. I'm a office 365 subscriber anyway, but the Google photos interface is a little better and Google's sharing facilities are much better. OneDrive need to work on that. But if I'm going to pay someone, it's going to be Microsoft.
