Simple Hall sensor endstop switch

As a happy owner of Delta printer I was pretty concerned about repeatability of endstop switch and its accuracy, as it's crucial if you want to calibrate your Delta well.

I observed several solutions replacing microswitches, all of them have its pros and cons:

microswitch:
+low cost
+simple installation
+good rigidity
+no calibration required
-low precision (activation hysteresis not stable)
-clicking sound
-requires physical contact to activate

optical endstop:
+high precision
+contactless
+high speed
-requires powering
-requires special light interrupting "fin" on axis
-sensitive to light, requires enclosure (factory ones usually already enclosed)
-tricky to assemble yourself, factory solutions are somehow pricy and might not be the best fit for your particular setup

TMC sensorless homing:
+no extra hardware required
+it works
-to my experience it's really fiddly to adjust sensivity
-if sensivity set rather low to ensure correct homing, axis hits endstop