Hit or Miss?

Hello forum,

I currently drive a CLS550 (4.7 TT) and of course I love it!:bowdown: Anyway my work truck has been a Chevy Silverado which I had used as an everyday vehicle. Recently though my job has assigned me to a different position in which I will be traveling the country frequently. The truck is great but I really would like to drive something that has some character and gives me pleasure to drive. I will be driving from Chicago to Michigan, Canada, Boston and some parts of Indiana.

This brings me to a find I made recently. A 2008 Mercedes-Benz S550 4-Matic (W221)
I found a great deal! Driving around the country in these vehicles is a dream come true as I am sure most of you who have owned these beauties can imagine.

Now here is the biggest con, it has over 131k miles.
The car was an in-laws step brothers car out in New Jersey. He is a CEO of some company and has babied that thing like no other. The mileage is mostly all highway. Car was driven from Jersey to Florida. Here is a list of what I have seen done to the car.
-Clean Carfax (No need for any major work under warranty):thumbsup:
-New tires
-New Rotors+Pads (All 4)
-New Filters+Fluids
-New Bulbs
-New Belts
-Wipers

Basically all top notch repairs as he was planning to give this car to his son.

My question to you good folks is should I go for this or should I pass this one by? He has offered to pay for any mechanic of my choice to overlook the car for any potential problem. He is very honest in the selling of his car. Car has only had minor scratch from suitcase at airport which I'm sure can be buffed out.

Reading previous posts from both benzworld and benzforum many have said this car is simply bulletproof and some on both forums have claimed that they expect 500k+ out of this model! The W220 is said to not even be compared to this new W221. The only issue I have heard is of a "balance shaft" repair. Some codes on the engine bay supposebly determine if this work has been done. Maybe a picture could help?

Thanks for your time guys, I really do appreciate any feedback about this matter as I'm sure many of you too dream of driving this beauty around the country!

(As always maintenance will be religiously done if bought):bowdown: