I personally don't really like Google drive because of the way it looks and functions. Also, i only get 15 gb of free storage where as on dropbox I get 50
I have started using Google Drive recently as I now use a chromebook. I must say I love it, with my chromebook I got 100gb free space, which is amazing. I then got an M8 and it came with 15gb of free space so I now have plenty. I love the fact that the drive is available on all my devices - but as the above post mentioned, it's not the most user friendly and pleasant to look at
I use it because it has an intuitive interface for Mac/ PC and is somewhat passable on Android. Sucks that there's only 15GB free of online storage - maybe I'll buy a chromebook to get the extra 85GB and return it!