ive used pretty much all coco on the market from canna
atami bcuzz bio nova bricks and another brand of compact coco.
im using canna at the mo as there was no
atami/ bcuzz, i tend to go for the bcuzz as its been steam treated to kill any pathogens and pests also seems to be a finer and have had less bits of rock and plastic in my bags. i have found plastic and little stones in the bags of canna. they seem to have the same amount of nutrients added.
as for the compact stuff id go for the brand that i cant remember not the bio nova ones if possible but they work fine, you just have to dial in the right amount of water to add to get the best consistency.
regards
Sinestro