I've only competed once so my opinion probably doesn't matter that much on how it'd related to scoring, but I also did the CBJ deal, and cook a lot of brisket. My most commonly used injection for eating barbecue is the Myron Mixon 1:1 Minor's Beef Base and Au Jus concentrated pastes + water. Of the more competition oriented powdered injections I've tried, which are Butchers, then Kosmos Original Beef and Kosmos Reserve Blend, I liked the results from the Reserve Blend the best, but they were all pretty good for that style of injection....I dont have a fancy palette. I see Cattle Prod recommended quite a bit so I'll probably try that one at some point.