With the cost of new cars so high, it's a risky proposition to "take a chance" on something that might not turn out to be reliable. The number of $10K repair possibilities is too high.
I think that just says it all. Why spend big bucks for a new MB that has quality control issues? I drive a 1986 560 SEL. It has just 120k miles and looks and drives wonderfuly. I have been looking at the new 500's but after reading about all the problems that have occured with the newer models I am not going to trade up. I'm sticking with my 560 SEL. These truly were "the last of the hand built MB's". And that's a shame.