I wish to no longer store most of my stuffs using a flash drive and wanna go with the online cloud drive. Which cloud storage would provide the best worth for the price? I'm thinking about MEGA, it's a free 50GB storage with high security (at least what they say), or something like Google Drive, Dropbox, even paid version of iCloud. I prefer free service, but am willing to pay a little for better quality apps. Any suggestions?