I'd say if your wanting them done quicker and maybe higher THC, lower risk of pests, go with coco. If you aren't in any rush, want lower maintenance, and possibly better flavor, mix with some quality organic soil with plenty of beneficial microbes, earthworms, and the like.
Soil grower myself, mostly cause it's just what I like. I enjoy building my little symbiotic community of organisims and trying to keep them all in balance. Some people love coco and do great with that to! Grow with what makes you smile!