I replaced my wrecked '07 with a 2010 Limited. The '07's engine was starting to concern me so it was actually a blessing in disguise. I've had the 2010 for 5 years now and it's been near bulletproof, with almost 200K miles and still going strong. Definitely one of the best vehicles I've ever owned, and my goal is to get to 300K miles. The only difference between my 2010 and your 2014 is the load leveling suspension (which I don't have). Other than that, it's pretty much identical. As noted above it's all going to come down to the price, but there is no reason to shy away from a 2014 due to any design flaws or faults. All the 5.4's have potential phaser and timing chain tensioner issues so pay particular attention to the oil condition, type of oil filter on it (was the oil changed at the quick change place or somewhere where they used the correct Motorcraft filter), and maintenance records. If it's been well cared for, then it has lots of life left in it. My 2 cents...good luck!