I had pretty much promised to hand my phone down to a brother in law (a 6) this year even before we knew what to expect. If there hadn't been a promise, I probably would have just kept it for another year. But since upgrading, I wanted something DIFFERENT. And the large one is different 🙂
If I don't like it, or next year's model is REALLY REALLY tempting, I can hand it down and buy the correct size next year.