I need help deciding. I want to pull the trigger on a 335i E90. A new one for $90 over invoice with all the options I want for a total of $45,880. Or a used one with almost all the options I want and color (interior/exterior), except the rear parking sensor for $37,000. The used car has 9k miles on it, its a 2007 with a production date of 05/07. It will be purchase on either one. I can put down a substantial downpayment for either (more than 10k) and fiance the rest (new @ 3.9% and used at 6%). Should I take the used for the saving of almost 10k?