Default Best Mid-Tier Chinese Phones

So, after owning an Xperia Z1s for a while, I've decided to sell it and want to buy a mid tier Chinese phone, but I'm debating what to buy.

From what I understand, being on t-mobile, the 1900hz band will get me 3g/4G so most phones will work.

I'm looking specifically for a phone with a 1920X1080 screen that's 5" and fairly light. My budget is about $250 and lower. I've looked around for a while and found one phone that seems to match very well, but there's almost nothing about it:

I don't like that it has physical buttons and a 2000mah battery, but everything else is almost perfect, and at that price it's hard to complain.

My question is, does anyone know much about this phone (Nibiru H1)? Are there better options out for the price?

Also, can you but other roms on these phones as the stock ones are fairly ugly.
too lazy