When I was looking in late 2011, I drove all of the manufactures. I was on my 2nd Duramax. Drove a Chevy, and the interior was the same as my '07 which was the same as my '02. Chevy interior was also the smallest of the 3 and I felt cramped in it. Drove a Dodge, liked it, but didn't care for the tow mirrors, bed size was small, and didn't use SCR technology which I wanted. Drove the Ford and really didn't find anything I didn't like. Biggest interior, liked the King Ranch leather, drove well, the "man" step makes bed access easy, and the wife liked it best. After 3 years, no regrets. Pulls the fiver, 15.5K, no problems, no issues with truck, very pleased.
Got the fever a month or so ago and went out and drove all of the 2015's. Drove a Platinum, Laramie Limited and a LTZ(no High Country to compare). Thought they were all very nice. But I would get a Ford again, because it felt "right" to me. I say get out and drive them all, see which one fits your butt best, and then enjoy.
And now, back to the normal RV.Net lets bash each others truck and get the thread closed instead of answering the ops question.