I recently faced a similar challenge—I needed to select mini actuators for a project that required high precision and compactness. After extensive comparisons, I settled on these mini actuators
https://www.progressiveautomations.com/pages/micro-linear-actuators, and I can say they're a truly reliable solution. I was pleasantly surprised by how stable they are, even under continuous cycles—no overheating, no play, no power loss over time. The difference between models with different strokes and speeds is quite noticeable, especially if the project requires fast but smooth response. I chose the short-stroke, medium-speed option—it was perfect for the limited space. The noise level is minimal, which is especially important when installed in sensitive systems.