BRS or Marcos Rocks?

I wanted to buy an extra 50lbs of dry rock for aquascaping purposes. Which rock should I buy BRS or Marcos Rock? I have heard mixed reviews about the BRS dry rock. I was leaning towards Marcos Rock, but wanted to hear some opinions. I am going to buy the rock cement at Marcos rock and some nylon rods. That alone would qualify for free shipping. I don't mind buying one thing from here, and one thing from there. Money is not really a concern. I just want some quality dry rock.



Thanks FTH!