What exactly would be the difference between RAW and Jpeg in terms of photo quality and what you can notice visually?
What bwana said
There is a lot more detail in the RAW file that gets lost during the in camera conversion - depending on the camera you're looking at a stop or two extra dynamic range. You also have the ability to correct your white balance without any detrimental effect to the image quality.
That said for me RAW is too time consuming for what I need so unless I absolutely have to, or I know I've got plenty of time at my disposal, I stick to jpg.
I don't have anything to add to your post. It pretty much says it all.