I basically agree with the last 2 analyses, but the only piece of evidence I have to offer may not be one you guys will welcome with open arms -- the Epic by Aerobie.
This disc obviously has a unique "personality
", if you will, but the feature I feel may be relevent is that the manufacturer indicates how to tune it
for a desired stability: flex the edges up for more stability, and down for less. Practical application verifies the theory easily and undeniably. So at least for this disc, all other factors held constant, domey = less stable, and flat/concave = more stable.
And say what you will about the company and their golf discs, but these guys are onto something
Also, great food for thought with that DGR link, Tim.