For some time, the W116 has been stuck in no man’s land value wise; not as new or attractive as the W126 that replaced it, and not as classic a design as the W108 series had been. It’s not that it’s an unattractive car at all, but unfortunately it’s bookended by arguably better looking models and unfortunately – outside of some real stunners – the value of Mercedes-Benz sedans falls below coupes and convertibles. For a classic Mercedes-Benz enthusiast on a budget, then, the W116 offers a lot of vintage Mercedes-Benz build quality and longevity on a budget. There are plenty to choose from, too – lest we not forget this is a S-Class Mercedes, so the price was stratospheric when new and even lightly used. Option out a 6.9 to the tune of around $50,000 in 1980, and you’d have the equivalent buying power of nearly triple that amount today – roughly $143,500 in 2015 money. And they were laden with top-end technology for the time; recently I covered a series of Volkswagen Rabbits, where everything outside of the tires was an optional extra. In the S-Class, you had electric nearly everything, electronic climate control and in the case of the 6.9 you threw in hydropneumatic suspension. These were, and still are, impressive vehicles, many of which were maintained to a high level yet are available for a fraction of their original investment. Today I’m taking a look at the slowest and fastest of the bunch – a 300SD and a 450SEL 6.9. Which is the classic S-Class that woos you?