As I have said many times in here, the one bodily dimension no one ever bothers with is seated height. Clothes manufacturers use leg length, height etc, but no one bothers with the body length.
Mostly this is irrelevant, but when it comes to riding a bike (motor as opposed to push, cos push have multi adjustable saddles) the length of one's seated bod is the crucial factor when it comes to screen effectiveness, together with reach to the bars and how far forward/back you sit.
I'm a tea-leaf under 5'10" but with 33" inside leg I am shorter sitting down than swimbo who is only 5'4" standing up.
I never got on with the stock screen on the K12 and put a double bubble on it; a blue one obviously, cos it was a blue bike. The K13 came with a black Powerbronze and I have stuck with it.
I doubt anyone else's recommendation is worth much unless they have exactly the same bike and exactly the same head position in relation to the screen whilst riding.
As an aside, I did an off-road training day on the Honda Rally and spent a lot of it standing up on the pegs. On the ride home, all of 5 miles, I couldn't understand why I was getting so much helmet buffeting. This at all of 60mph.
Then I realised that I had moved the TomTom up a tad to get a better view of it whilst standing. It sits up high but normally totally behind the tall screen and now it was protruding about 2" above it. Moving it back to where it was before and all the buffeting disappeared. Maybe Honda got the screen height right for me and the stock aerodynamics spot on too, although many other taller seated riders complain about it endlessly.
But you have to have a black screen on a black bike...