Having been (and still currently am) a legal marijuana grower, extractor, and processor (since 2008), delta 8, 9, 10 are all synthetic cannanaboids NOT found (in any natural quantity) in flower marijuana. Please ONLY use those cannanaboids in topical or edibles. They are NOT safe for inhalation, as they contain acetate.
I have found 1 strain of thc out of the 60+ I have on hand or grown in the past to help with pain. I use a tincture made from it after a knee surgery yrs back and disnt take a single vicoden. However, I took 30 doses a day at 20mg/dose to achieve this. I have a very high tolerance. I take 150mg/night just to sleep.
I also use this tincture I make to help ppl kick opioid addictions. So far I've've helped 12 of 15 ppl kick the habit.