Quick rundown of GO vs EJ. I have used both.
GO has a few different marine based products in it, which account for the bursts of growth you see between each feeding. My GO plants grew tall however had large spacing in between the nodes compared to my EJ plants. The end product wasn't that different between the two in the end, but the EJ plants definitely had a slightly better taste and a plant that finished a little heavier / healthier.
Also, and this isn't a complete dis on all marine products, they do provide awesome growth and nutrition and I use them early in flower, but I use them sparingly due to metal counts and I can taste the fishy background flavors come harvest if overfertilized... which seems counter intuitive I'm not going to go there right now I don't know why this is happens completely...
I wouldn't discourage anyone to stop growing with either of these products, but for my money the EJ Grow / Bloom with a little molasses or catalyst on the side can do everything the 7 or 8 bottles can in the GO line up, and maybe even a little more. I am running 10 + strains right now, and the grow / bloom combo is getting me through without deficiencies, no flushing or anything required. Oh I must add I love fulvic / humic acid, I use ful-power because of the cold microbial processing which is the best way to get the fulvic acid. EJ has been trusted for 20 + years by gardeners everywhere... they use really high quality ingredients and are known to have the highest amounts of insoluble organics (grow and bloom tend to be muddy on the inside of the bottle), which aid in a quality microherd.. Feed the soil my friend.