I am one of the strongest advocates of shooting in RAW, primarily because it's the file a buyer wants if he buys your work. On the other hand, I don't sell a lot of shots, and now with the 40D and 12+Mb RAW files and only 150 on a 2Gb card, and the ability of CS3 to open JPG files in ACR, I wonder if it isn't worth it to shoot in JPG again? What do you all think about that? For me, I found it much easier to adjust colors and lightness in ACR with it's nice sliders and everything right handy, than to edit a jpg using menu dropdowns or flyouts. Just took more time. And it sure would be icing on the cake to have a huge buffer again. 
Still, I have only opened a jpg in ACR tonight, haven't shot any JPG's in my camera yet, and don't know whether editing the jpg's will add more, less or the same amount of noise as editing a RAW, which has generally been less noise from adjustments. It's something I will be ding tomorrow for sure though. 
Also, I just upgraded to CS3, so this may be old stuff to you, but to me it's like someone turned on the lights just now. 




