The Blueberry Sativa available from Sannie's Shop is actually Eskobar's strain. Esko regularly posts on the Open Grow site, and will answer any of your questions, I'm sure.
I can't find the link, but as I recall, the BBS was bred from some of DJ Shorts' lines. True Blueberry sticks in my mind, but I can't be sure.
There is a good topic started by a poster looking for advice on choosing a keeper over there.
https://www.opengrow.com/index.php?showtopic=42600
I warn you, if you read that thread, you will need to cover your keyboard too keep the drool from shorting it out.