You thought they were ''close enough''? It depends what kind of a nail polish junkie you are.
As you can see Essence Crazy Me and Catrice I Sea You aren't that close at all. They're both green and similar toned, but that's about it. Essence is deeper and it has jelly-like qualities. It's not a complete jelly though. Catrice on the other hand is dustier (toned down with grey). Photos speak for themselves:
I love everything about the Catrice one and Essence is also really good. I think you should get them both if you can. You can never have to many greens, right Feline? XD
Hope this post helps!
Thanks for looking!