I'm working on a new layout using my old Atlas track. I was an original purchaser way back when they first brought it out. I'll be selling my surplus at the Greenberg Edison show in August. I don't really know exactly what that will be, but no 072 switches. I will have 054 switches, 054 curves and most likely smaller radius curves. Probably some 10" straight also. I haven't thought about pricing yet, but this post is helpful. It is too heavy to ship.
I've found the Atlas track to be great. My switches are version 1, and they had their challenges. Screwing on the motors fixed most of the issues, but on some the power track came loose. I believe they were thrown out. All the other track is great and has held up well. Some of the plastic clips at the ends have broken, but I screw my track down on vinylbed, so that doesn't matter to me. And most of the connectors have been replaced with the ones that have dimples.