I have its predecessor, the 303UB and on paper it's great, but it's not as nice as I expected.

The 4K screen has a "faux 4K" pentile-like layout so smaller text and any type of thin line look horrid on Windows and stock Ubuntu (I Hackintoshed it for better multi monitor support and OSX anti-aliasing looks much better, making me wonder if Retinas have the same type of "faux 4K")

The screen also has the same horrible yellow tint defect as several other 13" 4K models I looked at.

The touch screen has a layer above the screen that becomes really noticeable in certain light (Bot that the touch screen is really of any use on a non-transforming laptop).

The list goes on.