Never used the original version but got a small trial bottle of V2 to try. Most stims don't hit me very hard (or at all) so keep that in mind. With that said I did notice some improved mood and slight bump in energy (kind of a nudge into the right direction rather than a smack in the face). I preferred it as a morning pick me up to pre-workout, but combined with non-stim products it did a good job adding some benefits pre-workout. I didn't notice much more from 2 caps compared to 1 so I typically just went with 1 when I dosed it.