I have a totally excellent aftermarket cargo mat that fits tightly like a glove (with 3rd row folded down) and has two creases going left-to-right to make it easy to fold it up so it can remain in the trunk behind the 3rd row when upright (though it won't sit flat in this config - but at least you don't have to take it out of the car).
It looks great, non slippery surface, was affordable, and I love it. But I cannot recall the brand at the moment... will try to remember to look at it and post back here....

HERE IT IS - It says Aries 3D on it:
http://www.radoauto.com/products/ari...-x6-cargo-area