This is NOT Consumer Reports nor Consumers Guide. However, the annual auto issue is on the "newstands." It does give very good reviews of the "E" Class and most MB's.
It does not recommend any MB's as "Best Buys," but in 2010 the "E" was one. They may recommend more than one vehicle per category as a "Best Buy."
However, they recommend some cars as "Best Buys" that other sources rate very low.
The major benefit is that they have a brief description of each model sold in US and then show MSRP vs. invoice price for the models. In addition, they have a list of all the options and MSRP for each model.
It's handy if you want to compare a lot of different makes and models. Or just see what is going on.