Just to add to the voices here, I had a 2007 Pathfinder, and really was a good truck (mileage was a little low). 130,000 when I traded it in for the Summit. I considered both the Explorer and Pathfinder during the search (I also have a 99 Explorer I use as a snow plow with 175,000 on it). While I really liked the Pathfinder, the new ones with the CVT put me off. It is a technology I simply don't trust in a higher powered car. Too much can go wrong, and the stresses I would impose would be at the high end of the range (hunting and field driving). So even though it was comparable in features, I had to toss it out.
I have never cared for Explorers. I find them a little cramped in the interior and the doors are hinged too far back to make front seat access as easy as I like. Remember - I also own one, and the fundamental body layout hasn't changed. I did drive a new one, and confirmed this.
As for the Summit ('13, 5,000 miles) - simply the best decision I have made in 20 years on a car. I simply love it. While not without minor issues in the electronics (not ISSUES - just quirky things in the architecture and voice recognition), it has been flawless and met all of my expectations and exceeded them in many ways. Too much to talk about in forum, but in brief - I LOVE THIS TRUCK.