For me, I have never seen a DSLR output good jpegs with noise reduction, even the D4s has issues.
The problem is that in camera noise reduction often creates large artifacts, where as if the raw image is processed and has noise reduction done with a tool such as noisware or neat image, then you get noise reduction with more detail than the jpegs, all without the blotches and other artifacts.
It just seems like people should should at least keep Raw files as backups even if they are not ready to start editing, because when they are ready to get into lightroom or photoshop, then they can go back to old images and make them look better.
Even if someone is just picking up their first camera, once they try Raw, they will never want to go back go jpeg.
jpeg:
https://dl.dropboxusercontent.com/s/pc9d3toj8pjage9/096...
Raw edit:
https://dl.dropboxusercontent.com/s/ewmya4xc7xqondc/abo...