NRF52840-DK EVAL Board for NRF52840 nRF52840 - Transceiver; 802.15.4 (Thread, Zigbee®), ANT, Bluetooth® 5.x (BLE) 2.4GHz Evaluation Board vs ATK x QK Hex80 HE Magnetic Gaming Keyboard, 80% TKL, CNC Aluminum, Hall-Effect Ti Switches, 8 kHz Polling, Rapid Trigger, RGB Backlight (Gery)
Side-by-side comparison based on Reddit community data

#9 in Mechanical Keyboards
Nordic Semiconductor
NRF52840-DK EVAL Board for NRF52840 nRF52840 - Transceiver; 802.15.4 (Thread, Zigbee®), ANT, Bluetooth® 5.x (BLE) 2.4GHz Evaluation Board
$97.60
100/100Excellent
100% positive0% neutral0% negative
“use an NRF52840 Bluetooth with ZMK as the MCU.”

#5 in Mechanical Keyboards
QwertyKeys
ATK x QK Hex80 HE Magnetic Gaming Keyboard, 80% TKL, CNC Aluminum, Hall-Effect Ti Switches, 8 kHz Polling, Rapid Trigger, RGB Backlight (Gery)
$239.98
100/100Excellent
100% positive0% neutral0% negative
Pros
- +Has a switch to easily disable the battery for wired use
“Boards like QK for example at least have a switch to easily disable the battery if they wish to use it wired full time”