Expedition vs. Yukon vs. QX80

The direct injected 5.3 was an all new engine in 2014 . So when was the eco boost developed? 2011?? Funny how when you don't change an engine line up in 4 years people think it's no good . I really think people these days just buy the latest greatest and have to intentions of keeping for long time with lots of miles, and having to do your own work on them . Just Spin it off after warranty and keep that 700 car payment rolling!