I have an old iPad 2 in 16gb. It has all but 1gb full. I really do not listen to music on it, so I could remove that. I mostly surf the internet, Netflix, You Tube, Kindle and read PDF docs. My iPhone 6 is 64gb in size and about 14gb full. It has more music and pics. Today I have an iPad Air 2 16gb sitting in the box at home. I'm not sure I should open it. I am concerned I will want the 64gb version as soon as I start installing all my programs. Are the iPad retina apps much bigger than the old iPad apps? Does anyone have specific examples of the current versions/installs? I know most here will say get the bigger version. I am just trying to evaluate do I really need it since I already have the 64gb iPhone.