Kailh Ghost Switches Compatible for Lofree Flow84 Mechanical Keyboard, Low-Profile, Linear, Quiet Sound, Hot-swappable, Full POM Material and Featherlight Touch - 106 pcs Linear Switch vs NRF52840-DK EVAL Board for NRF52840 nRF52840 - Transceiver; 802.15.4 (Thread, Zigbee®), ANT, Bluetooth® 5.x (BLE) 2.4GHz Evaluation Board
Side-by-side comparison based on Reddit community data

#2 in Mechanical Keyboards
lofree
Kailh Ghost Switches Compatible for Lofree Flow84 Mechanical Keyboard, Low-Profile, Linear, Quiet Sound, Hot-swappable, Full POM Material and Featherlight Touch - 106 pcs Linear Switch
$49.99
100/100Excellent
100% positive0% neutral0% negative
Pros
- +Quiet
“We were inspired by the current low-profile switches from lofree... Therefore, we opted for the very quiet low-profile design in the final version.”

#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.”