My first real mat purchase was a Jade. I love this mat but I eventually, "upgraded" to a manduka.
With the Jade I had spectacular grip but often times I could feel my mat stretching away from me or bunching up while transitioning to up dog.
The Manduka is a denser mat and this problem has gone away. The problems I have now are that when sweat lands on my mat it stays on the surface rather then being absorbed. This has caused me to fall out of a few poses. The obvious solution to this is to purchase a towel to put over it but that defeats the purpose of having what we push as, "the best" mat you can buy.
I have heard many people, including ashtanga instructors, sing praises of Lululemon mats however I have never used one.