Have tried a free sample and was pleasantly suprised. I normally use SIS products but like the sound of "pumping" the required dose rather than having to weigh it out, also having it available in pouches is great to take on those away trips for races.
My sample was the lemon/lime flavour and was expecting it to be quite sickly but is was refeshing and didn't have the sticky, heavy feel you get with some energy drink products.
I will be looking to purchase some within the next few weeks so will do a proper review for it after a few runs.