Well, bearing in mind it's a Pentax I know that at least one of the observations will be that the kit lens has dreadful CA problems. I think this is cut an paste on Pentax reviews hereabouts.
The French mag Chasseur d'Images does proper lab tests on lenses; needless to say that their empirical review of kit lenses revealed no such issues and ranked the Pentax one just marginally behind the Nikon, with Canon's last after the Olympus and Sony offerings. But they key finding is that NONE of them are a disaster area.
My preferred French mag Le Monde de la Photo has a review of the K-x this month. It gets 9/10 and the editor's recommendation. I'll guess the phrase 'incredible high ISO image quality' is not one that will appear in the DCM version.
Personal interest time - yep I'm a Pentax user.