I agree... from what I've heard none of them have a decent voice. Emma's is not really worth hearing - although I would imagine that most people don't have my taste in music.
And I generally can't stand Emma... Annoyingly stupid... - I must point out that this has nothing to do with her singing, I just can't stand people who are inarticulate (Kitten, like, being, you know, a case in point, yeah?)
Where's a gun when you need one...