exactly, the current list of allowd cultivars is all low yielders resin wise, and was mostly bred for fiber and such.
I got very sweet like candy tastes and smells on cannatonic from resin seeds, but depends on how well it was grown in the first place....
I pressed a 3:1 CBD:THC cultivar last night purported to be ACDC x Headband OG. Has a sweet candy taste and smell, kind of smells like Purple Punch.
Yield was ~10% @ 205F.