Your choice is quite clear as of Jan 2016. Almost all of the latest tutorials/books/online courses and other learning material have moved to Swift. So, if you a

Your choice is quite clear as of Jan 2016. Almost all of the latest tutorials/books/online courses and other learning material have moved to Swift. So, if you are looking to develop for iOS 9 and Xcode 7 and above it is Swift. Even if you wanted to learn Objective-C all the good versions of learning materials are at iOS 7 and below. Not a good choice since it is very likely none of that stuff works cleanly anymore. So, go with Swift. Yes, you will need to be familiar with Objective-C on an as needed basis, but if you learn Swift and iOS programming it will be a translation and not that bad.