Well, the new Atlas roadbed included track isn't out yet, but I'd be willing to bet it'll be better than the EZ Track.
The EZ track seems to have all of the drawback's of Unitrack (ie, clunky toy-like appearance) without the benefits of the precise engineering, wide variety, and overall high quality.
I know it's also REALLY limited in what's available. I believe there is only one type of switch available.
I also have heard that the way it connects (the J shaped hook) is really fragile and unreliable.
If you're going to go with something like EZ track, I'd suggest waiting for the upcoming Atlas product to be available, so you can compare it and the Kato Unitrack (the current leader in that type of thing).