From this video, getting perspective from the cases only, S8 will be about same height as G6 but little slimmer. S8+ slighter wider than G6 but noticeable thinner than V20. Man from the way he's holding the Plus case and flip tomshowmthenback, that FPS looks like a reach where I like to have the bottom corner of my phone rest at the bottom of my hand. I like the smaller S8 size since basically looks same as G6 size.