I do use the IL Euro Sticks at the moment, but I thought they are a 100% copy of the original Happ Competition joysticks. I never played on Happ sticks, but I can't believe that they have twice the travel as the IL Euro sticks - that would be unplayable.....
I'm looking forward to play on my SANWA JLFs - have different springs and actuators, bat and balltop, original and cherry switches and an octagonal gate - can adjust them to my preferences.