Any like will work in coco
Although I believe Canna ranks #1. I've used it in the past and the only reason I don't still is because I have to order it online and they really give it to ya on shipping
#2 would be House n Garden. I use their cocos a & b with great results
Just remember, less is more in coco, ya don't really need an Entire line of anything
The best ones are the ones that cost the most and have the coolest packaging.