THe last mascara one I did, the crappy one was easy to figure out because of the wand shape/size and tube shape...but i never did figure out the one i liked! I hope you have an easier time (and please let me know what it was, if you do!)
And then in the 10 week bb cream study, I fell in love with one and no matter what I did, those bastards would NOT tell me what it was! haha. I really wish they'd tell us afterwards! Even if it's not released yet, they could tell us the brand at least!