For more than a year now I am using a Huawei Mate 2. I like it's big screen (6.1 in), even if it's 720p only, and most of all the big battery - I charge it every 3 days in normal use, where before each phone I had (I changed them yearly) would barely last one day.
Now I am looking for a replacement, but it's not easy to find. While many phones now have big 6 in screens, none I could find have a big 3 day battery, support an SD card, and preferably cost less than $400. I may have to live a bit more with the Mate 2. The Mate 8 may be a replacement, depending on how long the battery will last in real world tests and the no contract cost.