I'm using the H&G coco line. I love the stuff. When using the root exellerator the ph fluctuates quite a bit(at least if ur using a resevoir) so keep an eye on it.
I always add calmag cuz I'm RO. Also I've found that the dose charts aren't enough, I usually add about 50-75% more of the a/b or I see deficiencies, but I also grow 7 foot plants.
The only downside of the line is the shape of the containers. They are difficult to open and even more difficult to pour out of without spilling, you should get the pour spout for the 1 gallon and larger containers.