D2000 is an excellent macro strobe. sTTL really works via fiber optic cord. Wide, even beam with the diffuser. The z240 has a bit more punch for wide angle (guide number 24 vs. 20.) You can't go wrong with either one.
I've posted my latest video, "View from the Rinse Bucket" on YouTube. It was shown at the San Diego UnderSea Film Exhibition last Saturday. If an underwater camera could talk, this is what it might say:
I've posted a 3 minute YouTube video on New Zealand fur seal pups playing in a waterfall pool. While Mom is fishing in the ocean, the pups go upstream and cavort in fresh water until it's feeding time.