I'm a newbie,but I hope the follows helpful.I must say that i'd rather camera jpeg before,simply because it's easy to check the image or overview.Maybe it is the experience of using dc that contribute to this habit.
Usually i adjust a pic with photoshop,but i found it good enough to do so with nikon capture software if you shoot raw.I use nikon d70s btw.As many bloggers here mentioned ,you can do more adjustment with raw format,even the original white balance.So finally i understand why most designers prefer the raw.
And what taught me a good lesson is like this:
I lost an opportunity to sell an image because i can't just provide the raw format when a potential buyer asked for it.That happened a couple days ago.
Want your images sell better, shoot raw!