ok, here are my 2 or 3 cents....I had a 2015i Denali and traded it for a 16 Escalade, both were regular wheel base and captains chairs.
For the Denali I went with Weathertech...while they were nice, they lacked follow through...ie gaps between the 2nd and 3rd row sections that allowed debris and such to get underneath. So for the Cadi, I went with Husky and got the x-act contour for the front and 3rd rows...they don't make one for the second row, had to get weather-beater, cough, Husky...if you are going to only offer one product for a top of the line model offer your top of the line product, cough...
I took the chance to compare all 3 and I can say hands down that the X-act contour are the best option out there. Their weight, probably 30~50% more than Weatherbeater/Weathertech is nice. It holds in place and edges seem to stay down more.
When comparing the Weatherbeater/Weathertech it was again an easy win for Husky. For the 2nd/3rd row in the Weathertech, the row sections just met, no overlap, so lots of space for crap to fall in-between. The Weatherbeater overlaps and give you confidnce that the first cup of juice or milk will find its way to the mat and not nooks and crannies to create a lovely aroma.
Also, the Weatherbeater feel denser but also more flexible. For our 3rd row of the Weathertech, the portion that fit on the door sill kept curling up. Weathertech mailed us a free replacement and it still did the same thing as well as under the 3rd row seat. I even tapped it down for a week and it just kept happening.
Per Husky, the 3rd row is the same model number for both cars, so I thought it was interesting to even see the overall pattern differences between the 2 companies.
Here are some pictures between a Weathertech and an a X-act contour for the 3rd row. the one on the right is WeatherTech and the other is the X-act contour. You see the edges where I circled the lack of overlap vs the Husky product.
I hope this helps everyone with their choices: