Listen to dzldog. The 240D starter is a piece of cake to replace. The 300D starter is just the opposite, it's a real PITA.

On the four cylinder you can reach the top starter bolts without getting under the car.

The 240D is much, much, much easier to work on, at least under the hood, than the five cylinder cars. This is why I wouldn't take three nice 300D's in any condition for a good manual transmission, manual window, manual sunroof, and manual a/c controlled 240D. This is my own opinion, and I'm not throwing rocks at those who like their five cylinders. To me, one of the biggest attraction of the 123 diesels is the ease of service. The five cylinder takes away much of this ease of service.

My $0.02,