I think I will stay with dropbox, it works with Linux, thankfully I don't need a lot of space for what I use it for.
i do have a hotmail/MS account, and I think I got about 25GB of space on their sky/one drive, but i have not really used it.
Windows 8.1 got to be linked to your MS account all the time to use it, at least with windows 8 and below you could just use a application and that was the only thing connected .
Desktop machine now powered by windows 8 pro 64bit, no dreaded metro and Linux , laptop by Linux
ALLPAY Wireless broadband