Aquatic Critter is the best place for live rock, idk how much it is online but its 6.99 here and i love it so far. But if your ever near nashville, its worth going to.
and.. Thing is, I picked them small everytime i went. First time i went, i picked up a 6 pounder to start me off. then ever since i picked up a 2 pound, 3 pound, another 6 pound. Thats just about all, I just pick out the one with lots of holes in it, big or small.
-Cant wait to add the 50+ pounds from reefcleaners