Google Drive

You can can share any of the storage plans between you.

Top tip do a Google takeout every couple of months and download everything to a hard drive. It is not safe to have all your data in one system (edited)

I do Google Opinion rewards which pays for the Google one storage.

Thanks for pointing out Rewards, I'll do that then. I seem to get surveyed quite often but my wife less so. Is that because she doesn't generally bother with it?

weeZL - the rewards can vary quite a bit, from less than 5p up to 80p depending on the number of questions asked I find. Anyone shared a receipt? Do you get more for doing that?

Ask yourself these questions.
How important are your data/files/photos? Do you trust the cloud infrastructure and the companies managing your stuff to be there whenever you need your data/photos?
If you were to store your stuff "locally" on storage you trust and is readily available would that be more acceptable? Would this storage need to be portable?
How old is the photo you have that you have never viewed? What is the oldest photo you last viewed and how old is it? How many photos do you have? Do you edit all your photos? What method do you use to categorise/sort/search for your photos? How often do you carry out housekeeping, deleting photos very similar to each other, or you simply no longer need?
Cloud storage can be great, but just because you can store and pay for multi GB does not mean you should - unless you are too rich to be bothered.

Unlimited photo storage with Amazon Prime.

I used Google photos for years, it's good but be warned it's not that easy to get your data out of it.

I had around 25k photos in there and using Google takeout gave me around 100k photos as it kept duplicating photos and adding random files.

Now i have everything hosted locally. If you're happy to be locked into Google then it's a good choice imo

I have the 2TB Google One and pay approx £14/yr