Hi snapdog, since you refer to dramatic lighting a lot, I am assuming you are concerned with how well the D30 handles contrasty lighting situations. If this is so, I would not worry about it too much as the camera is VERY capable of recording such scenes, as long as you utilize the histogram tool to make sure your lighting is correct and within the camera's contrast ability. Easily done and from what i've experienced is just about identical in sensitivity as film. So you shouldn't have to modify your technique when it comes to lighting.
"recycling" time? I am guessing you mean how fast the camera can buffer and process images when using the motordrive. If this is what you mean, the D30 is NOT the best camera for motordrive sequences IMHO. At least if 3fps doesn't turn you on. Coming from a 1N-RS, I am used to extremely fast sequences. The D30 doesn't even come close to the original EOS 1. Literally think of it as a Canon Rebel in this department with about a 12 frame window of opportunity (I am guessing as i don't shoot burst this long with the D30). You will find the D30 will lock you out after a MD seq as it processes the images. You can keep the camera in ready mode by continuously holding the shutter halfway in between shots. If you let go it's over because the camera will start the image processing.
Hope this helps. If you are using the camera as a tool for your career, you should consider the 1D if these limitations are of a concern. The D30 is a SPECTACULAR camera in it's price range, but not perfect. However, if you are not concerned about MD and AF capability, and you don't need to do multiple exposures, then the D30 is wonderful.