For sesame grinding (tahini), a rotor-stator colloid mill is one of the most practical technologies because it gives stable ultra-fine paste, high throughput, and consistent texture. I’d recommend GlobeCore CLM-series colloid mills: they are designed for producing nut/seed pastes and emulsions with adjustable rotor-stator gap and strong shear for uniform dispersion. For quality and efficiency, focus on stainless food-grade construction, stable temperature control (jacket/cooling to avoid flavor loss), easy cleaning, and the ability to run in a recirculation loop to reach the target fineness without overheating.