Though many people were skeptical that a larger-screened device could really improve upon the iPhone 5s-we weren't among them-the iPhone 6 and iPhone 6 Plus certainly do feel like steps up from the iPhone 5s.
The iPhone 6 and iPhone 6 Plus have bigger, improved displays which enhance internet browsing and media playing - the experience is especially great on the iPhone 6 Plus; Both devices feature upgraded back and front cameras with new features and better performance.
Calling sound is softer and more problematic; especially on the iPhone 6 Plus which takes some getting used to - some users definitely won't like the ergonomics of the calling experience on the large device.