jpeg if you miss polaroid, raw if you want to produce a better image. Jpeg if you shoot on program, Raw if you like to process your work. I started years ago processing my photography with black and white film. Lots of hours in the darkroom making my pictures better. Ansel Adams taught me you do your very best capturing you image with you camera settings. Then you are half way there now you go to darkroom and apply techniques to make it better. With digital photography you have a choice of raw or jpeg. Jpeg will process it for you. In the film days just send it out to be developed and be content with the results. With raw you are now going to have to process it, you can do this with jpeg but you have less information in you file. Raw gives you more information and an improved image compared to jpeg results. Processing Raw files is simple with most programs. Which is truly better depends on what you want to achieve with you photography