All three of my tanks are BB. The 37g is predominantly a monti cap tank, no fish/inverts. The 67g is LPS and softies, a pair of ocellaris and two cleaner shrimp. The 120g is all softies, 5 blue/green chromis and a dwarf angel I have yet to bring home. I have steered away from keeping fish that require sandbeds, cuz, well, I don't have any
Also, none of my tanks have skimmers, sumps or refugiums. I keep my nutrient levels down by keeping a smaller number of fish so I don't run into too many nuisance algae problems. I also keep macoralgae in each tank to eat up nutrients.
Have had my tanks BB since last summer. Would not go back to having sand.