If it helps... I chat often with the owner of Reefcleaners (John Maloney) on Reef Sanctuary a real stand-up guy & quality company ! Have never ordered any of his rock, but John & his companies service is 1st class !
I split an order with mcmullenmark last week and it was VERY nice, lots of holes, very porous, also while rinsing the only thing that came off of it was a little dust from shipping. And I don't think you can get better service. John had emailed me within 3 hours of placing the order asking what size pieces I would like, and verifying all of the info on the order. He's a real nice guy and the product is top notch! I plan on ordering more for my new 40 refugium in the next few weeks. Hope this helps!