I am test driving a new 2013 SCREW Lariate 4X4, the Eco Boost is a great test drive. I am deciding between the 5.0 and the Eco Boost engine. Is there any reason to avoid the EB? On other forums i read about the shuddering problem in the EB, how real is it. I don't want to be sorry I bought an Eco Boost later. I would appreciate some opinions on my engine choice.