I've used Weathertech in my past two F150s and really like them a lot, so that said I just installed a complete set of Weathertech in our '14 Explorer.
Terrific, the front fits like a glove. However, the foot well is so deep, the mat doesn't lap over the frame like it does on my F150. The truck can be brushed out with a whisk broom. Can't do that for the Explorer.
I got the complete set, including the one-piece second row mat, third row mat, and cargo mat. I've got a good friend who is purchasing agent for a major accessory house, so he made me a complete deal I couldn't refuse.
IMO, any mats have got to be better than the carpeted ones that come stock. Heck, I used to order my trucks without carpet.