I think it was a real shame that ubuntu dropped ubuntu one a nice file sync storage built into the operating system that worked seamless seems crazy to loose?
Anyway ive tried different storage solutions and the best seems to be google drive – costs £2 per month for 100 gig which aint bad (other price plans available for more storage) . So i looked at sync software and stumbled across insync at $15 one of payment and i have installed on two computers, my laptop and my home computer. Ive synced my documents, photos and music all in one solution. Some other price plans here – Basically install the deb file by double clicking on it and once the install finishes it asks your google user / pass and start syncing which ever folders you decide to choose. The installer installs another deb if you say you want integration which is very handy as it tells you which folders are fully synced and which folders are syncing! The only thing im waiting for is that it has to sync to a certain folder which can be placed anywhere and id like it to sync to specific folders i specify but i see that is being sorted for next release 🙂
On the android I use Gdrivesync which lets me specify folders and easy to set up as well as using the google drive app which is handy as well, but if your looking for the best file manager that even lets you copy folder back and forth from the droid to google drive try astro file manager this supports google drive and loads of other file storage solutions including drop box – last but not least on the droid try cloud around, you will need the full version to use google cloud which was £1.25! but this will enable you to play the music you put in your google drive, plus this player has the ability to scrobble to last.fm, it was the only cloud player i could find with a scrobbler built in!!