Marlin 2.0/2.1 for Longer LKx Pro. Should also work with Alfawise U30 Pro
Why do you think that https://github.com/imnotnoa/Marlin-2.1.2.1-Ender-3-SKR-Mini-E3-V1.2-BLTouch is a good alternative to Marlin---Longer-LKx-Pro
Marlin 2.0/2.1 for Longer LKx Pro. Should also work with Alfawise U30 Pro
Why do you think that https://github.com/imnotnoa/Marlin-2.1.2.1-Ender-3-SKR-Mini-E3-V1.2-BLTouch is a good alternative to Marlin---Longer-LKx-Pro