Creating prescription lenses with free-form or digital surfacing techniques doesn't automatically make a better lens. Both are only manufacturing methods. A better seeing lens is the product of the vision science of the designer, the testing of the design on wearers and the skill and calibration of the lab that created them. So, the most important aspects of choosing lens brands today is your trust in the the source of the design and the lab that created them. (Image, Schneider HSC Master Generator)