I wasn't asking you to justify anything to me and I'm not trying to give you shit for using them if thats how it came off. Like I said, I've been wanting to try out some bloom boosters and FF was my first choice so I was trying to find a reason to pick them up, but I need to see real reasons behind their use and never got much so I kinda shrugged them off as unnecessary and expensive. And I was more assuming that you wouldn't have been using a line of products for years without having the justification for yourself, either side-by-sides with/without or understanding the differences between them. That's a long time to not play around with something for me personally.
It just seems like the solubles arent much different than the base nutes besides the lack of N, which I'm personally not too interested in; I've gotten overfert problems long before I felt I had too much nitrogen when using Tiger Bloom. 0-50-30 is just a concentrated 0-10-6, which isn't too far from their 2-8-4 in Tiger Bloom.
OS: 5-45-19 = 1-9-4 and CC: 9-50-10 = 2-10-2 which is the most different because of less K. Again, if it's just a very precise manipulation to perfect the ratio of available nutrients at the right time, I get it. But labels, the FF rep I talked to, and numerous advocating users all haven't really claimed that and instead say that they: improve root growth for flowering(different than root growth for vegging?), increase bud density, improve oil, flavor, etc. That isn't a biological mechanism, it's a selling point. And the fact that the selling point is the most technical reasoning thats given is what mostly keeps me from buying.
I like FF as a company because they seem like a straight up company with a variety of choices for different applications, not just targeting pot growers with gimmicky bs. And I've had mostly good experiences with their products besides not liking OF(ph issues). But the solubles just IMO break that trend for them, feels like marketing more than anything. Not to say they don't do exactly what they're supposed to though as I haven't tried them. If I get better answers from the company at some point I'll probably give them a shot. /rant