I like all of them. But the reasoning behind the Born This Way cover aside, it's definitely the worst. Britney's Femme Fatale cover comes in second because it's a bit plain and boring, while I'd put Katy in second with Teenage Dream because though it's artistic, it's a little too obvious that it's a gimmick.
Rihanna takes the cake for Loud. My choice has nothing to do with my stan status; I just feel that the cover's font and picture are so simple yet so fantastic. It's like the GGGB cover - it's iconic. Not literally, but it evokes that feeling.
Even tho the born this way cover is crap, I like it more than the others just coz the others are all just trying to look pretty. They are pretty, but looking pretty is easy....right?
I think loud is the best.. followed by katy perry... Britney is second to last only because gaga's album cover is atrocious and one of the worst covers EVAH!!!!!! .. because I am no fan of the britney cover...
But all fails in comaprison to the awesomeness of Animal + Cannibal cover.. I love the attachment between the animal cover and cannibal cover...