Choosing a joystick for your avoidance/approach task is crucial. For stability, consider a joystick with a weighted base or suction cups. The combination of both can enhance overall performance. Opting for a reputable brand is advisable, ensuring compatibility with directRT. Reliable retailers offering competitive prices and excellent service include [Retailer A] and [Retailer B]. Your selection should align with your project requirements and budget constraints. Best of luck with your programming endeavors!