I can't speak for canna experience, but I've used several other lines that I have found to be as competent if not more competent than AN...for bloom boosters
Just add magnesium to the bud igniter or big bud....or use hydroplex from botanicare as a flower boost, it has P K and Mg in one bottle, instead of breaking it up across several products. 3-5ml per gallon makes it last for a bit. Ginormous mixed with sea mag from humboldt nutrients kicks serious ass. Bloom Khaos, mated with Herculean harvest, used with Gaia mania from Nectar For The Gods is my current project, and it seems to be working amazingly, it's calcium based (the whole line) which is really strange, but it seems to be working wonders.
Growing in coco and super soil. (Depending on my mood at time of purchase).