I'm considering buying a cabriolet and would like to hear opinions on which is the better model to purchase? i have found an 07 2.0 TDI SLine with 22K and an 06 3.0 TDI Quattro with 36K within £500 of each other. Are the 2 models comparable on running costs servicing, mpg, tyres, tax etc? Which is the better model to purchase is the quattro going to eat through tyres? Commute is 20 miles each way. Would appreciate people's experience and opinions?