I loved the live rock and sand I got from
@LiverockRocks Tampa Bay Saltwater! Lots of cool hitchhikers, a few undesirable ones as well. They go hand to hand. Would recommend TBS highly, with the caveat that the reef keeper must be willing to handle the entire scope of life that comes with the rocks. Would also suggest placing it all in an observation tank for awhile to give you a chance to trap/capture any unwanted hitchhikers, knowing full well you might not get all of them.
Not for pristine/sterile mindsets
My 10G tank with 20lbs of TBS live rock and 10lbs of live sand. Going on 8 weeks, getting ready for my new 90G tank in a couple weeks.