In very simple and plain words:-smooth or microtextured implants (first generations developed) have high rate of capsular contracture if located above the muscle-macrotextured or polyurethane coated (velcro) implants (latest generations) have even lower rates of capsular contracture in subfascial plane than submuscular, and can also be used subglandular though my recommendation is subfascialIt can be said that any implant shell in submuscular location is acceptable, though unnecessary nowadays with modern shell implants.I am for macrotextured or polyurethane coated shells in the subfascial plane, this allows the lowest rates of capsular contracture (nearly non existant) and less pain, less aggression and quicker recovery.