I'm going to be purchasing my first dSLR and would like to get some feedback from you all. I currently have a Sony DSC H9 and then a smaller Minolta. I am a lighting designer and programmer for concerts, theater, etc and need a camera that will excel in low light, dynamic range, etc situations. I also am getting into content creation for media servers and the like. Although this is about a $1000 range of prices, I'm looking at the D200, D300, 40D, or 5D. I'm leaning toward the 5D because of the full frame censor. I've also heard rumor of a replacement 5D coming out so perhaps it's price will drop or the new 5D will be worth the money. Any thoughts?