not sure who OGR is, but the other 3 breeders all have good gear. TGA & DNA have my top 2 strains... JC2 & sweet haze. DJ shorts is a little more expensive than i like to get, but i've only seen love for his gear so far.
when it comes to blueberry though, i definitely like fruity sweet haze better for a superior buzz and along the same mid-level stone, like the more authentic & exotic flavor of DNA sour cream more. if there's a DJ shorts strain i'd get it would be grape krush