I got a bottle of TPA's bacon flavoring on a lark. Interestingly, there are some good reviews for it on their website. Not to diss TPA at all -- their offerings are first-rate -- but I'm still not sure about this bacon business, personally. I'm still recovering from my potency tests, where I try to find the "right" percentage of the flavoring to use. 10% was utterly vomitous. 5% was bad, but not wretched. 3% was not good. That's where I left it. I'll come back with more experiments later.
My thought is that the bacon flavoring might have to be used in the 1-2% range, and even then might not be something to be used alone. Maybe mixing it with a good maple would make it tasty. At this point, I don't know.
In any case, it seems to me that bacon is, at best, a tricky flavoring to use. I'm not surprised that the bacon juices out there are so horrible!