When I tried the ZTE, I really didn't like it - in my opinion, it felt like a downgrade from my Galaxy Ace Plus (at the time). There were similar specs between the two, but when the Galaxy Ace Plus struggled a bit, the ZTE wouldn't work at all. A couple of apps that I used wouldn't work at all on the ZTE, yet they would work (albeit slowly) on the Ace Plus. The internet speed felt slower on the ZTE, despite supporting a more modern type of data connection (14.4 Mbit/s instead of 7.2 Mbit/s), and Google Chrome was very, very slow - which was one of the whole reasons for me to upgrade from an Android 2.3 device to an Android 4.0 device! Oh, and the FM Radio wasn't as good, and the camera had no flash. IMO, the ZTE was a disaster!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.
Will I ever go back to ZTE again? Nope! Will I stick with Samsung forever? Probably not, as it depends on what different companies are offering when my S4 gives up the ghost.
Though it would be nice to remove some of the preinstalled apps on the S4, that I will probably never use.