Hydraulic brake pedals and load cell brake pedals are both commonly used in racing simulators and are designed to provide realistic braking performance. However, each type of brake pedal has its own advantages and disadvantages.

Hydraulic brake pedals are a popular choice for racing simulators because they provide a more realistic and consistent feel compared to load cell brake pedals.

The hydraulic system used in these pedals simulates the same type of resistance and feedback that drivers would experience in a real car, giving them a more immersive and accurate simulation experience. Additionally, hydraulic brake pedals are often adjustable, allowing drivers to fine-tune the resistance and feel of the pedal to match their preferences.

Load cell brake pedals, on the other hand, use a highly precise load cell to measure the amount of force applied to the pedal. This provides accurate and consistent force feedback, which can be useful for training and improving braking performance. 

While hydraulic brake pedals provide a more realistic feel and are often more adjustable, load cell brake pedals are more subject to wearing over time, they also come with a lower price point than hydraulic brake pedals. This is due to the complexity and level of quality within the brakes.

Ultimately, the choice between a hydraulic brake pedal and a load cell brake pedal comes down to personal preference and the specific requirements of the racing simulator. 

In conclusion, both hydraulic and load cell brake pedals have their own advantages and disadvantages, and the choice between the two will depend on the specific needs and preferences of the user. Whether you're a professional racing driver or just looking to improve your racing simulator experience, a high-quality brake pedal is an essential component.