Husky over Weathertech
I have not owned Weathertech floor liners, but I did own a full set of Husky floor liners in a Yukon XL. I hate to be the guy harping on flexibility, but the Husky's were not very pliable at all. When you removed them to clean them, the little carpete nubs on the bottom would cause damage to the surrounding surfaces (i.e. like leather seats, etc.). Those nubs were just plain old sharp as well.
Another problem I had was during winter, the Husky mats got real hard, so if you wanted to remove them for cleaning, it was difficult. Lastly, I got curl over the years as the plastic/rubber got old.
The Weathertech may perform the same way, I do not know. I did just post a reply to the original message in this forum to learn about the flexibility/pliability of the weathertech liners.