Personally, the reason I prefer SRAM is because of the design, but I'm curious what others think.
In order, it's Ultegra, Force, Dura, Red chainrings, and
Shimano's design all looks the same to me, so I don't quite understand the feeling of using the top-tier? There might be a difference in perceived performance, but from a distance, they all look the same...
As for chainrings, it seems like Red really pulled off the design well..