The Lancero I smoked last year was from '01. The Sig I was from '07. I had an '05 Esplendido as well. It's not a broad sampling, but I have at least tried some aged and thinner Cohibas without detecting any grass. I've also tried young (less than a year) Cohibas and still not detected the grass.I don't see where you mentioned the specific Siglo series smoked, therefore I derived that you smoked the larger rg akin to the other sticks prefaced. If you've smoked all types, but have trouble finding the grass, I guess Ben is correct in trying an older stick.
I'm not trying to start any arguments here. I'm not trying to say people who taste grass in Cohiba are wrong. After reading several reviews and forum posts that list grass as a typical Cohiba flavor, my intention was to get a thread going that showed the diversity in tastes among smokers. As we see from the poll results, there are at least 15 other people whose experiences with Cohiba agree with miine: no grass whatsoever.
Again, no one is right or wrong. I just wanted to see how my palate compares to the general population participating in the poll.