I used their original potting soil and I like it better than any other. I was also using their line of nutes. Don't have any expierience with the go box
First time user with roots organic,I am newbie,in all aspects.I started in coco,with g.h flora,but seems more involved then soil.and having issues,so as a beginner I think soil well be easyer
I've used both for several years. They are pretty much the same thing. Both work great and other than having to mix multiple bottles every feeding they are relatively trouble free nutes. The end product taste great and yields are good.
I would buy whichever one you can get the cheapest. Both are a good choice for a soil grow.