Hi, all. Just wondering if 10.2 is a good idea for the 6. Especially whether or not it introduces lag in any way. I used to upgrade my phone every two years, so there was never really any problem. But I'm keeping the 6 for who knows how long, and I'm wary of updates based upon my iPad 3rd gen, which is damn near unusable after installing the latest iOS it supported. Thanks in advance.