I have dealt with live rock from all over... Marshall islands, Fiji, Fiji when Fiji was still good, pukani, and a couple others... This is the best rock I have ever seen hands down no ifs and or buts. The last piece I bought is nearly the size of a basketball and weighed in at 7.8lbs. A similar sized Fiji rock would be around twice as heavy (in my experience). I'm impressed by the amount of life that is actually on this rock. Everything from chiton, limpet, copepods, amphipods, I even have a breeding population of snails. The bacteria contained inside this rock is way over par also. I have trouble having nitrate showing up at all.
With live rock you do take a chance at three occasional bad hitchhiker. Normally these stories are far and few between, and always broadcasted. Often less announced are the great benefits to live rock. Sure using dry rock will work, and you can buy lots of critters to live inside them. Lots of these critters come inside the live rock and some most hobbyist never think of including.
The rock on the far right is the 7.8lb one I have referred to. It was added right about 3 weeks ago. The rest was bought in December, cured in a tub until march and put in the tank.