I went to my dealer today to discuss the price of my Edition 30 - more of that in a seperate post - and while we were talking I mentioned stone chip protection and he told me that the dealer can buy stonechip protection film from VW and get it applied for the front of my Edition 30 for around £80 which sounds like a bargain. Not sure about the quality though as I remember asking them about this last year and they said that VW stonechip film tended to peel and yellow after time and was mainly used for the rear bumper of family saloons like the Passat... so I'm a bit suspicious one because it is so cheap and secondly because of what I was told last yer. But its worth checking out.
I too was advised (by VW stealer) that their paint peels and yellows within a year...
i reckon Paint Shield is the best bet. It's also the only one that covers all bonnet which offers both total protection and no unslightly line across the body. Their credentials look good, seem to have an affiliation with a Porsche club - apparently Porkers get stone chips real bad.
Might ask to go to my local fitter for a peek.