I like my black diamond tank. If money were no object I would probably use eco-complete (well, if it were no objectI would probably use Aqua Soil). I like my Fluorite, too, but buying from scratch the advantages, to me, are too small to justify the cost increase. If the tank were smaller I would say buy the best, but a 75 will require enough that I would just buy black diamond. It does have a bit of shinyness, but I don't reallynotice and when I doI don't mind it.