The conti 5s are no noisier than any other tyre so ignore what the test results say and other people.
The main point Chris is that no tyre i've ever had fitted to a VW is as noisy as a Flintstone!

That goes for Pirelli P7, Dunlop SP01, Michelin PS3, Conti 2, Conti 3, Uniroyal Rainsport.
Some stats I see for tyres seem complete bollocks. I noticed a 5% improvement in fuel economy on my MK5 170TDI when I swapped out the Bridgestones for PS3s, yet they have the same rating for economy. Flintstone S001 have a B rating for wet grip, i'd give them a D at best.