I have used florabase, ADA, Eco, normal gravel with laterite.
Florabase: Cloudy water for about 3 days, acts like ADA by lowering ph. Brown color. Gave me algae, somewhat hard to plant. Used for 3 months then trash.
ADA: Best results so far, great even with out powersand. Used in my nano for 4 months, no algae problems easy to scape. Great natural smell to it. Three colors, brown, dark brown, and black. Can crush easily, easy to plant it. Very good for plants, lowers ph.
Eco: Clouldy water for a day, different grain sizes. Nice black color, creating a slope is a little easier. Light weight. Doesn't seem to have enough iron for hairgrass though. Used for 6 months.
Gravel with laterite: Pretty horrible experience. Would not use again.
Overall, I think ADA has prove to be very useful and great for plants. Hope this helps.