i tried the 3 stage on my s2 and had a few probs. main one was the amount of effort it took to buff each coat off the paintwork. it would take me around 15 to twenty mins per stage per panel as the stuff just hazed up and moved about rather than sticky to the polishing cloth. gave up in the end as it didn't matter whether i clayed the surface first or not. just use autoglym super resin at the mo till i can get my hands on something better.