Have not had any pesonal experience* with Atlas track but was quite impressed with Cesar's quite large layout recently. He used all Atlas equipment and reported having no problems with it.
I've noticed that occasionally someone will mention using Ross switches with Atlas track and I'm wondering why? Are Atlas switches deficient in some way? The obvious difference in appearance would seem to preclude using the otherwise excellent Ross switches. What is the reason some will use them?
* Other than having a few pieces of the sectional track and a couple of switches on hand. They appear very solid and well made. Impressive!