If you are an iPhone user, and you specifically want an iPhone to be your next smartphone, the iPhone 6 is great.
But of course the iPhone 6s is even better. It’s going to come down to budget ultimately, as the iPhone 6 is a brilliant iPhone that’ll save you a few pennies if you’re set on getting an Apple phone. It’s a slick, well-built, beautifully designed handset. Performance is good, the display is good, and the iOS eco-system is, well, good.