Owl's Night is a dark charcoaly-black jellyish shimmer with golden olive sparkles. I don't have anything like this, though it does remind me a bit of China Glaze Wagon Trail.
This is Raven's Strength, I don't have anything like this, but I have seen pictures comparing Revlon and Chanel charcoal-grey-black shimmers. I can't remember their names... Something like Graphite or Carbonite? Of all the pictures I've seen comparing them I personally find Raven's Strength the prettiest. I like that it's a true black base, unlike Revlon and Chanel that come across as more deep grey. I also like the the silvery shimmer is blue toned, it's unique in my opinion.
From what I've seen L'Oreal has come out with a great collection and their nail polish formula has greatly improved!