It depends!
I think you have to try an uncured batch at least once - just to see!
I got a batch of uncured Fiji from FFE once as well as a batch of pre-cured. Well, their pre-cured should be called uncured and their uncured should be called stinky, nasty-ass, dying sponge rock! Both did produce nice amounts of life in the following months though.
BUT, I just got 40lbs of uncured Marshall Island from Jeff's Exotic Fish yesterday (2.79 per lb) and wOw!! This rock is awesome! Iasked them for a couple larger pieces without a lot of rubble, and the box contained 3 rocks - that's it! less than a half pound of rubble, one rock weighs 25lbs, one 12lbs, and one 2-3lbs.
I think if you are getting it from a good source, go uncured.
fwiw,
chris
Here is a pick of the 12lb piece - good stuff!
