I like them both. But honestly I'd rather lsiten to KT Tunstall sing about puppy love than hear Winehouse brag about being transgressive. Although I don't listen to either so...

To be honest, the both of them are completely overrated.. Amy is being treated like the second coming of the messiah, and KT sings pleasant little pop songs.

is stupid. amy is billie holiday beside kt tunstall, hard drugs and all

I like Amy Winehouse for her music, I couldnt' ****ing care less how much she drank or if she did coke or not.

Tunstall used to be a lot more interesting before the ol' record label figured she'd be better off doing dido-esque lovey pop. I still have a big soft spot for Black Horse and the Cherry Tree. Plus, I like it when KT pushes her voice, has a nice clear break up, reminds me of an overdriven fender tube amp or something

Winehouse... I dunno, Every time I've heard her live on the telly or stuff, she's reminded me of the old Vic Reeves "club singer" slot that used to be on Shooting Stars, a kinda slurring mess really.
(Go here, and skip to about 5:55 for a prime example...)