I've used Dropbox for years. I thought about moving to iCloud last year instead, but found that I don't like some of iCloud's nature (like building folders automatically for apps at the root level of iCloud, etc). I want to control my structure well, so I've stayed with Dropbox.
I've tried other systems: Box, OneDrive, etc, but I find that Dropbox has the best sync in my opinion. I can move to family sharing, but the price hike over Plus doesn't seem worth it for my family (just my wife and I as my kids are too young to need it). I was thinking of just moving my wife's files into my account and sharing it, but if the family plan were a bit lower I would move to it—or give a Plus+1 account or something and I'd totally use that instead.
I also have 1Password and have used it for many years. I will stay with that since it is a great program. The secure storage area is intriguing in Dropbox, but only being able to access from the web/app is not so great—if there were a way to have that locally it would be amazing and I'd use it in a heartbeat, but I understand that is likely due to OS limitations.
I don't really like all the extra stuff Dropbox is adding, and there is bloat, but as a whole I still prefer it over any other option.