For my first rock purchase, I selected Pukani from BRS. My decisions were primarily based on: price, porosity, and ease of use for creating an interesting aquascape. BRS afforded me the option to discuss shapes and purpose so that I would not have to contend with too many small pieces; I could always make them smaller, as needed. Very happy with the rock and how I approached the problem and eventual solutions, e.g., technique in creating the scape. Rock was delivered dry.