What makes a nearly perfect display? Most users would probably say – wide sRGB coverage, high contrast, accurate color reproduction but only a few will be looking for a PWM-free display.
You can find the available configurations here: http://amzn.to/2wZR8k0
Luckily, the ASUS ZenBook UX550‘s display has it all – it’s ideal for multimedia, working and browsing and it’s flicker-free above 29% brightness so you don’t have to worry about eye strain during long hours in front of the screen. In reality, 29% translates into a very dim 85 cd/m2 luminance, which you might use only in pitch black room. In any case, the frequency of the emitted light is pretty high (25 kHz) and only users with extra sensitive eyes will notice something.