You get faster growth with hydro but I dont think its worth it because you have to do maintenance daily. Checking PH everday , adding more water to the res, changing the res every week or two. Then you have to worry about your timer going out of wack or breaking and hoping your pump dont go out because clay puts out a lot sediment. Then you have to worry about being dialed in so you dont get root rot. After all that you have to scrub the salts out of your res. It's just a lot more work and a lot more can happen.
I love coco because not only is it lighter but you can use small containers because coco loves to be root bound. The only negative thing about coco is that it needs Cal-Mag because coco absorbs it and slowly releases it and its usually not enough.
I'm itching to try out 501st Og in coco.