Part of my experimentation was to try many different doses, just thc, thc + cbd in various ratios, ones claiming to have "live rosin" or whatnot.
I did finally try a real joint -- of course it hits much faster, but the lung irritation and health concerns weren't worth it.
I'm a bit jealous of people who have a great time. A guy in the band I'm in is 45 and has been a daily smoker for 30 years. He is highly functioning -- has a good job, has kids -- and can work while high. I guess he knows exactly his response and does enough to feel good but not enough to cause problems. He also has a really high tolerance.