Both brands offer distinctive technology, but in different directions.
Motiva
Focuses on an ultra-fine smooth (SmoothSilk) surface, single-piece shell and ergonomic gel, marketed for natural movement and integrity.
Polytech
Offers polyurethane-coated shells for fixation and the lightweight B-Lite range, alongside conventional smooth and microtextured options.
Bottom line
If natural movement and a fine smooth surface appeal, look at Motiva; if fixation (polyurethane) or reduced weight matter for your case, Polytech has specific answers. Your surgeon's familiarity with the product should weigh heavily.