They are also very Chinese and closed and without a proper Google Play store. I used a HiSense 5c pro as daily phone (hope I have the name right).
Bought it because I'm quite interested in eink. It is interesting to use and it is really usable. It is ok to read text on. I was not able to root it and was thus a bit locked in. The lock screen couldn't be adapted to my liking and I did not fully trust in what spying it might be doing (like Google location tracking and such).