I only just now saw this survey, or I would've responded before it closed.
I own several NiZ keyboards:
- ABKO HACKER K965P V2 55g
- ABKO HACKER K985P V2 55g
- NiZ micro84 BLE 45g
- NiZ micro84 BLE 35g
- NiZ mini84 BLE 45g
- NiZ Plum 21EC 45g
- HANSUNG GTune GK893B Sports 50g
- HANSUNG GTune GK888B Minicoup 50g
Here's my feedback:
One thing I've noticed among my 45g boards is that some of them feel a lot more tactile than the others. For example, my 45g mini84 feels way more tactile than my 45g micro84. I much prefer the more tactile feeling ones.
My favorite in terms of keyfeel is the 55g K965P/K985P V2. I know for some folks 55g is a bit much, but for me, the weighting and tactility are perfect.
However, when travelling, I prefer my 45g mini84. I cannot always have good posture when I am away from a desk, and the lighter weighting is better for those situations.
On some of these boards, the indicator lights are under/behind the relevant keys, and I really like this.
All of the boards with detachable cables use USB-C or USB Mini. I like this. The durability of USB Micro is abysmal and has caused me no end of troubles.
It would be nice if the keyboards supported QMK firmware. That said, in terms of software, yours is defintely better than most.
I'm not a fan of the RGB/backlighting implementation in your boards. I prefer the lighting to come through the legends and not through the gaps between the keycaps. The best implementation I have seen of this so far would have to be the light pipes in the Logitech/Omron ROMER-G keyswitches, though I'm not sure their solution is applicable to your switches.