Well, after getting burned by a car I bought on past reputation. I've decided to switch to all diesels. I currently drive an '86 Golf diesel, low mileage, only 234000 on it so far. Driving 104 miles for work everyday, I need that great diesel mileage, well actually the mileage from the bio-diesel I make, which means I get rid of that POS subaru and get another diesel. I thought about another VW, but I want something with a bit more comfort, hence a Mercedes. So here I am. My big question for all you experts, is what model should I get or look for. My wife likes the 190's but I like the size and the comfort that a 300 would bring. So ... which would bring the most bang for the buck.....