Hey friend,
I think that they're all fairly similar and are definitely worth adding into the grow.
I did a little research into multiple name brand bud enhancers and they all seem to consist of several comparable ingredients, some form of sugar(molasses, cane, agave etc.), humic/fulvic/amino acids, often a kelp extract, carbs, magnesium and some other "secret" ingredients. So whichever you choose, bud candy, sweet bembe, honey chrome, big bud etc you're going to get some similar results. Choose the company you are the most comfortable with or support and it won't lead you wrong. I'm a little biased to honey chrome, but BB and BC are both good from my grow friends who like advanced nutrients. 👍