I can not give less than 5 stars for the device. I have no problems with halos (Clouding) or gaps. For me it is a good all round tablet. The device has a very high and noble, and the dimensions are perfect. It is neither too small nor too large and the 4: 3 resolution like it very much. Android 5.0 Lollipop runs perfectly on the Nexus 9 and I like also very good. I am completely satisfied with the tablet and would highly recommend it.