MB any Class except G class. It has probably the most advanced technology on the car I've ever seen. MY mom has 2001 MB C-Class, cheapest. Its computerized system has kept the car safe and stable... It never had flaws (for its programming at least) and detected errors right away and was able to fix it qiuckly (replacing lights, coolant, etc.) And the four year warranty you get certainly worth the money you pay...
But, again, I'm impressed with car's consistent perfomance over the years and the advanced technology it contains.