I've owned 3 Benzes, all bought with some miles on them.
Our W124 300E 2.8 is the remaining Benz in our garage and though it has 189k on its clock, it is still the most solid car of anything I've driven or ridden in, new or old.
Safety is #1 in my book, as it saved the life of our daughter who was hit in the rear by a car doing 50mph. The Benz was properly repaired.
I will always own a Benz.
Every year, I put money in it to keep it going, but it soldiers on with class and style and is a blast to drive. Absolutely, it is one of the best Benzes ever made and one of the easiest to maintain. Great mileage, as well, as it still gets 28-30mpg on the i-state at 70mph.
Safety, Style, Mileage, Performance & sound of the DOHC 6 is very nice. Easy to maintain.