Usually it takes me 3 crops before I get the feel for any new product... learning the quirks, ya know? So, would think you should run out the H&G a couple more times to get a fair compare & contrast...
With that said, used the H&G line for 2 years, though didn't incorporate all of it. Most additives are bunk, or marginal at best. A solid foundation nute program w a basic booster is all you really need. For these, I think of Koolbloom,
Big Bud, Bloombastic, or the like. They are much easier to run & dial in vs the H&G line, which quite frankly, is an advanced schedule that needs to be tailored to individual plants.
Gravity & PMax were borrowed from the commercial ag industry, if I recall properly... plant growth hormones. I've used their entire line (
bushmaster) & found them tricky. The PMax had an odd effect to my forehead as well... I know, I know, sounds bogus, but only thing I could find that was different in my routine. PMax actually ran easy, the BM & Gravity were touchy. Haven't touched them in a few years. Just my opinions. Peace.