Diaz or Collette

Diaz is the hottest. She's good at playing sexy and seductive and she never tries to leave her comfort zone. You won't see her pulling a Charlize ("Monster"). You wouldn't put her in an ensemble of talented actors unless you needed her to be slutty eye candy.

Collette is the better actress. Very contrasting from Diaz. She's not ugly or unattractive by any means. But any normal red-blooded guy would be drawn to Diaz first. You want Collette in your movie when you need an actress with talent and depth.