I think all the bad rep on media originated from coco is probabaly due to lack of treatment (soaking and washing) to get rid of it's salt contect (if any) before people start to pot it up. Other than that, I feel it's very cheap (compared to LFS) and readily available.
BE been using coco chips and coco peat all this while and they do sell some very healthy looking neps. If the pros use it, who am I to argue otherwise??