Hi I’m 3 days post op and I have the natrelle implants. The main difference is the CUI has a 10 year warranty and the natrelle have lifetime guarantee. Also natrelle has 7 layers and the other only has 3 or 4? Which means natrelle are less prone to rippling. But as an implant itself.. Don’t think the girls find much difference because you’ll find great results on both implants. Hope this helps