I think Britney's vocals on SMS (Bangerz) were so cute! She brought an angelic element to the album that that girl Miley Cyrus just couldn't bring with her sexed up lyrics. Britney was also really like, a feminist on that song and I think that was really cool, also! I think that Britney is a really good feminist because she's smart and quirky but she's also really, like, she works it! She's just so amazing. Anyway, I think they're her best vocals. She sounds really beautiful but there's a sexy element too which makes it really fun. Opinions?