There is a slight stretch, but its a good stretch, not anything out of control. I would say maybe a stretch of 1.5-2 feet? The best thing about the chem 91 is that buds grow all the way down the colas so the stretch is a good thing. Honestly this is the best structured plant I've grown besides Delahaze and Master Kush. Them chem 91 is everything I want in a plant. Great yield structure, moderate flowering time(she's ready at 9 weeks but let her go 10 and she gains lots of weight). I have not grown the Larry OG, but compared to the 818 the Chem 91 kicks its ass. I did a journal on my 818 Headband, but somehow the pics got erased, anyways the pheno of 818 I had was killer, but she didn't yield for me I was getting a little less than 2 zips per plant. Tahoe was a low yielder as well...as far as taste man I would have to say the 818 tastes the best. I couldn't even tell you how the Chem tastes though bruh. There have been times where it tastes like OG, garlic, petroleum and soap...shits weird lol. I attatched pics of my Chem though. The first two pics are bud pics from chem 91 clones at a 10 week harvest. Last pic is of the original chem plant that I grew from seed right before I harvested her at 9 weeks