The few 30%+ strains ive tried are not amongst my favorites, nor did I find them to be any stronger than strains that are my go-tos....and I don't know if the two go hand in hand or not, but I didnt enjoy the flavors as much either. I feel like the terps arent as impressive on those higher % strains, and mostly, I find good flavorful weed to and up being stronger.
That said, ive had some good tasting weed that had no effect before too - but was surprised by the taste because they appeared to be grown like shit.
Y'all can have the 30+% Im good with 20-28% and sometimes even 17-20% that I find better than those 30+%s.