|OPI Funky Donkey, Zoya Mira, and Nicole by OPI I'm A Belieber|
On the nail, I'm a Belieber is much lighter than the other two. Mira and Funky Donkey are pretty similar, but it seems that Funky Donkey is just a touch darker than Mira, and a bit more blue. While these two are not dupes, they are definitely very close and both are probably not necessary in your collection. Formula was good on all three of these, each opaque in two coats.
Between Mira and Funky Donkey, it really just depends on which brand formula/brush you like better - both are excellent choices! I am glad to have both since I will definitely be using plenty of this color for K-State games... ;)