I decided to try G Fuel after getting a taster pack of Sneak (a rival product here in the UK) and while G Fuel is definitley a bit more powdery, the flavours are far superior to Sneak, plus G Fuel is also cheaper.
Delivery to the UK seems to average 7 days from the date of dispatch (It usually takes 2 days before the order is shipped) and while shipping is a little pricey, it works out pretty good value if you look around for discount codes or take advantage of the twice yearly BOGOF sales.
A serving helps me feel energised and more focussed while gaming, or doing anything else really, and the effect lasts a few hours.
I'm a fan!