Antaeus is a loose cannon, Santos is a gentleman. Therefore, I do not find them similar.
I used to own vintage Antaeus while I was teenager / in my early twenties (got it as a gift). Girls really, and I mean - really, loved it.
Today, in my late thirties, I fall in love with Santos and have blind ordered Santos Concentree from USA. Never tried Concentree, but I just do believe in BN reviews.
Maybe is a good idea to have both in wardrobe, but I will skip Antaeus. Personally, I never liked that much beeswax in it. Sometimes is really annoying and every time I smell Antaeus I have a "beeswax deja vu" effect.