The HTC One has sophisticated design and user experience. There's no doubt that this is a premium device at the top of the Android pile. It's slick and fast and the refinement of the new Sense user interface adds plenty to Android KitKat.
The iPhone 5S offers a great quality display, even though is does not have a large screen. Apple first introduced Touch ID on this device, it offers effective security.But it's not only about the hardware, as the iPhone 5S offers a wonderfully polished UI in iOS 8
The Nexus 5 plays out the pure Google dream. There's a brilliant display, which gives you plenty of detail and performance to rival some of the top phones out there. However the phone does have a very boring design.
TheMoto X costs less than most other flagship smartphones, yet has many of the same features, like the gorgeous OLED display and fast Snapdragon 801 CPU, and Moto Voice, which lets you control your phone and apps without lifting a finger.