I'll check out Rihanna and Nicki's albums as well. I don't use either of them that much, but I must admit I miss them a bit atm. Which is funny since I was begging for Rih to take a break, and now that she did it just feels weird without her
Nicki most of all, Rihanna secondary (although a soundtrack album doesn't sound too exciting) and Chris third because his singles have been surprisingly good.