About Pine64:
I agree that they are more honest than Purism.
But let me tell you about my Pinebook (which I have since sold on):
It is built as cheaply as possible. That's why it's so cheap.
Seriously, the build quality, the keyboard, the screen... it works. That's about the best one can say about it.
No comparison to Nokia N9/N900.

Software-wise:
Pine64 do not make any sorts of promises or assurances there.
You buy the device, that's it.
Somebody else ported some Linux distro.
The enthusiasts never tell you about the disadvantages; who wants to admit defeat?
My biggest gripe was that there was NO stable GPU driver apart from the fallback driver. Video playback was between painful and impossible.

I'm not dissing Pine64, believe me.
I much prefer their business model to that of Purism.
But they're not producing miracles, there's a reason why and how their stuff is so cheap.

Also you will have to pay taxes/customs when purchasing directly from China. A lot. The pinebook + accessories cost me 110€, add to that shipping, paypal taxes, import taxes, I payed 213€ in the end. Not bad, huh?

Similar things will apply to the Pinephone.