Thanks to you both, that's really helpful to know. It was this review if anyone's interested
https://www.youtube.com/watch?v=61kHSuIk3AI&t=22s
His problem was with the buttons (and a few other things that I have no problem with) and so it got me wondering if they are as much of a pain to use as he seems to suggest and I'd be reverting to touch screen mode because of them, would it still be as comfortable and ergonomic to use. But I'm probably overthinking things! If he hadn't made such a big deal out of this my choice would def be for the bigger screen (as long as it fits in a handbag it's portable enough for me).