IMO Platinum Egoiste can´t even be compared to such a great fragrance like Egoiste.
They are so different it is impossible to compare. And, again, from my experience with fragrances, Platinum Egoiste is not worth it. AT ALL.
On the other side I can definitely say that Egoiste is right up there in my top five favourites. Trully wonderful and amazing scent. Great quality. Definitely Egoiste is the on to go for.