This can be a "popularity" contest as much as a singing contest, hence why Ace is still there, the girls like him. I expect Kelly to be one of the last for the same reason, athough she has more talent IMO and could do some Country.
I hope Chris stays true to how he sings, which I expect he will, even though the judges seem to contradict themselves. Simon praised Chris a number of weeks back for staying true to himself, the other judges agreed. A week or so later Simon criticized Chris saying he can't sing the same way every week! Which is it Simon? BTW, since when does an artist have to sound different on every song?
If Chris gets a contract, hopefully they will not destroy his sound, like with Bo. Chris is not a Pop artist, if they market him in Rock I think he could be HUGE.
I also think Katharine could be HUGE if marketed in the right arena. She reminds me of someone that could follow in steps such as Diana Krall or Norah Jones.