I've been using Samsung for the past 4 to 5 years. There are things which are good and bad about the brand. For example; the pros: the interface are user friendly, reasonable price, easy to sell out when you want to change phone. the coin: battery drain fast, quality drops quickly after a year of use, get hot on intensive use...
I'd never tried a ZTE though, so I have nothing to comment about this. Huawei is also the first Chinese phone I've ever used. If you don't like the preinstall apps on Samsung, then this Huawei almost comes with an empty phone. When I first turn on the device, I was surprise "where are all the apps!". I still observing what is good and what is bad about this Mate 8.
One more point, with the Samsung Galaxy Note 4, I take photo of the new 100 dollar note and zoom in to clearly read the words "The United States of America" on Franklin's collar. The camera of the Mate 8 can't do this or maybe I don't how to set that option.