Looking at 09 Jetta TDI as a second family car to take load of older Sienna. Like the idea of great mileage and understand it comes at a (price) premium but trying to figure what that premium is. Edmond's claims the stock TDI compares to a stock SEL model. Is this correct? If so the price differential seems to be close to $4000 . Can anyone give better comparative numbers or model styles?? I'm not so in love with the idea of (maybe) getting 50mpg that I will pay this kind of premium. At what (mileage) point do TDI owners expect to break even with their gas powered brethren? Anyone owning a Jetta TDI or earlier like to defend their cars value or the decision they made to pay what they paid for their Jetta??