It would depend on your grow methods, labor and money. Rockwool is cleaner than Coco, quicker to setup after runs and less labor intensive. Yes it’s more expensive in initial cost but because everything I named earlier I believe is where some of it’s strengths lie.
Dtw is simpler and easier than recirculating system and way less in cost. I’ve looked at systems and for our size I would need to spend 30k on a system to capture all the run off from tables, dehumidifiers and hvac. That’s definitely on the Christmas list though.
Clay pebbles are cheap and can be reused. I used them a couple years in the past and it’s not worth it in my opinion. They are heavy and hard to clean roots off them. God forbid you knock a pot over. When not in use you have to store hundreds of pots worth of pebbles.
For home or small scale clay pebbles can work however i don’t think they have better moisture control than Coco or rockwool. Use of any water content sensors would be difficult as well