1) Pink Friday: Roman Reloaded / The Re-Up - Nicki Minaj
2) MDNA - Madonna
3) Lotus - Christina Aguilera
4) ORA - Rita Ora
5) Warrior - Ke$ha
6) Halcyon - Ellie Goulding
7) Unapologetic - Rihanna
8) The Truth About Love - P!nk
9) Glassheart - Leona Lewis
10) A Million Lights - Cheryl
11) Red - Taylor Swift
12) Electra Heart - Marina & The Diamonds
13) Kiss - Carly Rae Jepsen
14) Born To Die / Paradise Edition - Lana Del Rey
15) Teenage Dream: The Complete Confection - Katy Perry
But, at least, I can force people to pick only one like that 
