hi soccerg,
i cannot entirely agree to my forespeakers, eventhough they are right in loads of points.
i have a w210 e55 4-matic and 2 G500's so i think i do qualify to give an honest opinion.
first of all, which e55 are u talking about the new model ? if so pls do not forget - no four wheel drive ! be carefull this car is very nice, but a beast in snow. with 300+ inches of snow i would not consider this car at all even though it is very nice.
as to the ML the new ML is a very nice car and def one of the best SUV around at this very moment. but it is an SUV. but be carefull the overvue is not as good as in a G and can be at times in narrow traffic or parking a pain. (like loads of the SUV's)
Now to the G the G is a Legend full of emotions and there are only 2 sides either you fall in love or you dont. it is most probably the most sturdy and robust truck private people can get. my wife loves the G and actually wouldnt drive anything else....
i would start a big test drive week and try all your options but.....keep them for at least a day in order to get properly aquainted.....
and i think there is no logical reason to buy a G only emotional ones......but they are big !
good luck with your decision
femo