I had Gtechnic C1 and C1.5 applied to mine. I also requested the glass and leather package. When i collected the car, the surface was like looking into a mirror.
I had it done in October, and a couple of months later, when there is rainwater on the car, it sits there in 'globules'. When driving, i can see the rainwater 'run up' the windscreen! Very impressed with is so far.
Have a look at the Gtechnic website and there are some videos on youtube showing how well water repels off the surface.
There is most likely an agent in your area.