I've smoked a well grown version of M39, and it's nice. The gangs and cartels just care about yield not quality. It's a great strain if grown correctly...
Last December? This stuff has been around for at least 7 years! They're all mostly Vietnamese that grow this strain.. because it finishes in 39 days, doesn't smell too much when growing, and doesn't look too bad. When one of my buddies first started getting this stuff like seven or so years ago from the growers.. the Vietnamese guy was stock piled because they didn't know anyone to get rid of the stuff for them. He used to get it for $1250/pound and it looked absolutely fucking beautiful.. albeit not that potent. He would get 10-15 pounds at a time because they had so much. Eventually years passed and the quality kept dropping.. and that's pretty much where we are today.. it's all shit.