Raw for me every time, raw is like an artists canvas with all the paints n brushes next to the picture, so you make little changes to make it better, Jpeg is going to Athena and buying the same print. With raw all or most camera decisions are correctable, with Jpeg you have allowed the camera to fatally lock every decision in. I understand partially when people say , I will click 500 photos n that horrendous in raw, it's not that bad these days with bridge or Lightroom. Think of the flip side what is take a cracking picture but don't realise it at the time on camera, you get home realise its in jpeg med or large, you will possibly regret not having the raw version to get the very best out of the picture.
These are my own opinions, I guess others will have theirs, however if I'm spending £1-5k on good kit and I then set it to shoot jpeg, is that not like buying a porche then putting remoulds on? Yes it will still drive but you will never get the best out of it