Which brand of eco rock?

[asylumdown]

I'm trying to figure out which brand of dry rock to use on my new tank build. It's going to be the majority of the rock in my tank, which will cycle for a couple of months before I put any fish or corals in it.

this is the brand that has caught my eye: http://www.bulkreefsupply.com/store/...-eco-rock.html

Has anyone here used it before? I like it because it's not man-made, and actually comes from an extinct, fossilized reef, but I've never seen any in person so I don't know how porous it is. I want something as close to real live rock in terms of physical properties as I can get.