Every year for the past few years I have had a new iPhone. From 3 to 3S, from 4 to 4S, from 5 to 5S and then to 6 Plus. I regard it as my duty to test them out for the benefit of readers. Now, for the first time on this treadmill, I am wondering if I should take a break. The 6 Plus is so good that it could easily handle another year of use. Event the battery, which in previous phones had begun to lose its mojo after twelve months, is holding up well.