Flybarless Controller

1. Integrated Flybarless Systems: These are all-in-one systems that include the flybarless unit, electronic speed controller (ESC), and receiver. They are easy to install and typically offer a high level of performance.

2. Standalone Flybarless Units: These are separate units that are installed between the receiver and the servos. They are more customizable than integrated systems, but require more setup and tuning.

3. 3-Axis Flybarless Units: These units use sensors to detect the orientation of the helicopter and adjust the main rotor blades accordingly. They provide a high level of stability and are well-suited for beginners.

4. 6-Axis Flybarless Units: These units use additional sensors to detect movement in all directions, providing even greater stability and control. They are commonly used in advanced aerial maneuvers and 3D flying.

5. Gyro-Based Flybarless Units: These units use a gyro to stabilize the helicopter in flight, without the need for a flybar. They are typically less expensive than other flybarless units, but may not provide the same level of performance.

When choosing a flybarless unit, it's important to consider the specific requirements of your helicopter, as well as your own skill level and flying style.

There are several flybarless controllers available on the market from various manufacturers, and the best choice may depend on your specific needs and preferences. As of my last knowledge update in January 2022, some well-known flybarless controllers include:

1. Spirit Flybarless System: Developed by Spirit System, this flybarless system is known for its simplicity and advanced features.

2. Vbar Flybarless System: Produced by Mikado Model Helicopters, Vbar is another popular flybarless system with a good reputation for stability and performance.

3. BeastX Microbeast: The Microbeast is a flybarless controller developed by BeastX. It is compact and suitable for a wide range of helicopter models.

4. Brain Flybarless System: Manufactured by MSHeli, the Brain flybarless system is known for its flexibility and features.

5. IKON Flybarless System: Produced by MSHeli, the IKON flybarless system is designed to be easy to set up and offers a range of customization options.