Zuk z1 seems to be a good move of lenovo as they have coupled with cynogen for operating system despite there own costum user interface. Zuk z1 available in grey and white but grey seems good. Moving to the build quality, it os average because in the race with unimetal bodies zuk Z1 is made of plastic. Moreover it has 3gb ram onboard with snapdragon 801. The gaming performance on phone is killer. All graphics get rendered properly without any frame drops.
Pros:
-the 13mp camera comes with OIS which is a rare feature in 13k
-good display 500nits bright
-4100mah battery.
-64gb hub storage.
Cons:
-made of plastic
-old android version 5.1
-snapdragon 801 is a 2years old chip.
The summary of the plot is zuk z1 is good buy without hickups.