I have personally owned or tested essentially every variation on Wico sticks (there are like 20+ variations), and I can confidently say which ones are the absolute best.
And yes, technically NONE of the sticks in my top 4 actually use leaf switches, but they are still Wicos and still the best.
#1. Wico leaf stick with optical conversion kit installed. All the feel with none of the problems.
#2. Perfect 360 (Happs) with the handle exchanged for a wico one (the P360 is a Wico class of joystick, despite being made by happs). I can't remember if I swapped in stronger springs or not, order the stronger spring just in case.
#3. The Wico sticks with the rubber grommet and the square actuator (microswitch).
#4. (These seem to be rare), the same basic stick as #3 but with a spring instead, swap the spring for a "Happ's heavy spring" from Bob Roberts. You HAVE to swap the spring, without the spring swap they become the WORST instead of the best.
#5 The classic (most common) Wico leaf with leaf switches and rubber grommet comes in 5th place.
Honorable mention goes to the Wico rotary leaf.
You might also want to experiment with the long hangled and short handled sticks as they have different feels as well.