Mercedes Enthusiast Magazine cover feature article on the 2006 S320CDI W221 in stock from October 2021. Comparing to one of the last W220 models, how do the two differ?

The 2006 Mercedes S320 CDI that was in stock provided its new owner with huge refinement, specification, quality and prestige all for under £10k. It's very much missed from the stock as its ride was sublime! How did it compare to the run out model it replaced? Read on...