How does the A9 processor compare to the A7 . I.e. processor in 2018 models like C8 Vs 2017 models like B7/C7/E7? I understand B8 will also have A7/2017 processor . Specifically, how does the Web OS compare? For example, I did try out a C7 and found the web os to sometimes take a moment to respond. I.e. it did feel a bit slow to respond. Wondering how much of a difference C8 makes with A9 in this regard. Anybody with experience of both?