I have an iPhone 5s and an iPad Air. The size discrepancies between the two devices makes the experience different enough to warrant owning (and managing) both. With the 5.5" iPhone Plus, the iPad becomes even more of a luxury than before and something that I could easily live without. iPad Mini owners will feel this effect even more. In the end, I'd rather sell my iPad Air and manage just one iOS device that serves both purposes than own both. Interested in what others plan to do if they get the iPhone Plus and own an iPad (and no, I'm not saying what I'm doing is what you should do...just want your usage opinions).