Thanks for your response, Steve!
I hope it’s not the same stuff that’s in Instant Shine, as my order for IS just shipped! So I’ll be able to tell you for sure in a few days, but I’m hoping to enjoy IS 
The tempering/negating of the alpha effect didn’t have any of the light or happy-go-lucky vibe I’ve heard people describe when using TAA. Instead, I just felt run down and kind of generally unlikeable. Based on what I’ve read, I’m thinking it may be A1-based.
EDIT 1/16/2011 - I found this excellent thread on TAK in which mark-in-dallas argues that WAGG = TAK @ ~45mcgs.