Re:SNS Focus XT?
i've not used it pre-workout but used it whilst studying to help maintain concentration - worked quite well IMHO
I think it'll work well as a pre-workout non-stim type product which i'm sure is what is was originally developed for!
I had a tub of the berry or *something* berry. some of the ingredients taste quite rank and the flavouring system did a decent job of hiding them - although there was still some slight aftertaste, nothing too bad though