All I know is that I've never had a real sativa buzz off of brick. I always get a dull sleepy high, every once in a while I will get a giggly high but it's very rare. Most of the seeds seem to be tiger striped to an extent also. I don't know how much that matters but I remember motaco writing that that is an indica trait. I wish I would have been around in the heyday of the sativas. Most of the sativas I get out of brick don't even look as sativa oriented as the Thunk I grew earlier this year.