Apple's competitors continue to try and outmanuever each other with huge bumps in screen resolution. The Galaxy S6, for instance, features a Quad HD resolution display. And while it's indeed beautiful, the iPhone 6 and its Retina Display can hold its own.
Samsung's AMOLED panels are outstanding. They deliver rich and vibrant colors. 2K resolution isn't just a gimmick. Apple's Retina Display is comparable. It doesn't offer the same resolution but it does provide outstanding viewing angles and color accuracy.
We've used every top phone that's come out between September and now and none of their displays have blown the iPhone 6's display out of the water. Most of you are going to be fine with the Retina Display. We still love it.