mindflux said
I second the white flood recommendation, at least if the reborn is as good as the older one (theoretically should be better): good focus and excells in the endurance department (and very well flavoured)
I've used quite a lot of both the original (US and UK version) and Reborn. The original UK version just lost GABA, but was a poor cousin to the US version. The main difference is that Reborn is a solid single scoop option, original really needed two (other than for those who had very mild stim tolerance. I believe original was 125mg/scoop and Reborn is 225mg/scoop?
Anyway, the difference between the two (two scoops of original versus one of Reborn) is mental or cognitive feel, I find the endurance support the same. Original had a very mild mood lift whereas Reborn has really good physical focus (almost certainly from the use of schizandra). I definitely prefer Reborn and the cost/serving makes for very good value.