See, this is the thing I want to hear. yes or no and varied sources of opinions. I think that some of these items are worth the cost of a small bottle as so little is used per run. I was thinking after trying the Terpenez that I want to use it but only if I have a cultivar that will be ENHANCED by amplifying the scent. If it is a cultivar that smells like alien vomit and cat piss than I would rather skip enhancing that particular characteristic. But if it has a woodsy smokey earthy sweet cloying smell then heck yes I want that to slam me every time I unscrew the jar.I ran Foxfarm for a couple of years and I like cha-ching quite a bit and still often use it with other nutes on the last couple of feeds. I find it increases a greasy/oily consistency in the bud. A worthwhile additive.
Getting this type of information coalesced in one place is something I would be interested in. This is the second level of growing. After most growers figure out the basics of growing and a fert regimen they understand the natural second step is augmentation of the program.