I have been looking for a more flexible and better priced service than Dropbox for a while. I think I have found it. It is called Sync. They give you 5GB of free cloud storage, which I am currently testing (and if you USE THIS LINK I think you will get an extra GB, so 6GB in total, and I will get 1GB for referring you – https://www.sync.com/?_sync_refer=de5f7b0 )
The paid service gives you 500GB for $49 a year and 2TB for $98 a year, which is very competitive and will allow me to store virtually all of my data, including all of my images on the service.