If I have an iPad Air 2 and iPhone 5s? My iPhone's battery is crap now, so I can't play games when I'm out and about without worry about it dying, so I only really use it for mail, calls, and texts. I use my iPad at home or at a place where I'll remain for a long while. Would getting the new iPod merit that? I'm thinking about getting it, but don't know if it's a good investment.