Anybody drive the V8 yet?

Hello! I would like to lease a Phaeton soon. Now I was able to drive all motorizations up to the V8. The (pers.) impressions so far: V6 – for this vehicle too weak. V10 TDI – too loud, driving also only 17 tkm p.a. W12 – power without end, however disturbing howling noise with light gas. Extremely high consumption. In comparable equipment approx. 16 TEUR more expensive than V8. The V8, which my dealer had organized, was just before the test drive with open windows and S chiebedach sent through the washing machine… So can anyone tell me about your experiences with the V8? Realistic consumption and acceleration values? Noise level? Thanks and Gruss Torben