Craig,
I used the PPG DCC 9300 on my Phaeton fenders. I sampled several other blacks, and found this to be the blackest black I could find at the time, ten years ago. According to my local automotive paint supplier, it's still the balckest. This paint stands up to spilled gas on the engine pan as well.
A word of caution, learned the hard way by me; Don't spray it and wait several months before wet sanding and rubbing out. That's what I did, and the paint cures as hard as granite. I sprayed the fenders and aprons and put them in the attic until I had the time to sand and buff, several months down the road. My hands and arms felt like they would fall off! So, once sprayed, at the very least, do your wet sanding as soon as possible to save yourself a lot of backbreaking work.
Just a while back, I did need to redo both my engine pans, as I laid a couple scratches in them from removal. What a drag, but that's what happened. I sprayed the pans in the morning, wet sanded and polished mid-day, and installed late afternoon. They look as good as the fenders, all in one day. That paint is tough.
Dave Lopes