After flopping between an air or a retina mini I decided to go for a mini retina. Now I just need to decide the storage for it. I was ideally planning on going for a 64 gb, since a friend of mine has a 32 GB and somehow managed to fill that up, and advised me to get a 64 GB. I planned to keep mostly videos, PDFs as well as apps on the device, and possibly all my songs. I figured I'd ask around for other people's opinions on what they use their ipads for and if they have enough room/ need more room. Also how much actual usable space does each model have? Thanks All!