That photo shows the difference pretty well.
What are the joiners for the Duddy and ME track going for these days and are they available? It has been a while since I've looked but I just bought several hundred feet of track at the last show. I think I have enough joiners left over from years ago but you just never know.
The Atlas joiners look pretty good with the detail but I plan eventually to use the ROW decorative glue-on type every 39 ft.