Omega Glaze and P21S PC are really two different product classes. Omega glaze is more similar to 3M IHG or Meguiar's #7, than a paint cleanser like PPCL or P21S PC. A glaze typically will not clean the paint surface or remove light swirls, like a cleanser. It really depends on what you want the product to do as to which is better for you. Do you want to clean the paint and enhance gloss or simply inhance/deepen gloss?