Hi all! The text below is Google Translate, so there may be inaccuracies, but I will try to use the simplest text possible, and this will be my personal opinion and nothing more.
Regarding hydraulic rods, I can say the following: if I had ordered pedals without hydraulic rods and tried them somewhere, or ordered them with one, then I would definitely want to order them. They work like another spring, but if the spring is weak at the beginning and the force increases as you press, then the main advantage of hydraulic rods is that their force is uniform throughout the entire range. Also, the hydraulic rods are in a compressed position even in the initial position of the pedal, so there is force already at the very beginning, and not like with a spring, with which there is a noticeable force only at 1/3 of the press. This gives the pedal a feeling of elasticity and monolithic, I didn’t measure the pressure, but it feels like about 10 kg or even more.
I don’t know how long they will last and what their resource is, but if they break, I’ll order more. If anyone is thinking about ordering or not, I would recommend you to order with them.