I got an assortment of Keys, Gulf, and Live Base Rock from Liverocks.com
60#s Live Base Rock initially (Early July 2004 I think)
40#s Keys and 40#s Gulf (Early Aug 2004)
By Late October I couldn't really tell which rock was from where.
There was plenty of coralline on the Live Base Rock when I received it and quite a few critters as well. If I had to do it again, and were really trying to cut costs, I wouldn't think twice about just getting Live Base Rock from Liverocks.com
All of their rock is fantastic in my opinion.
Hope this helps.