c903,
I do not want to start anything, but...

We are not shooting birds off of our bows...we are shooting arrows.

Feathers are lighter, but do not retain the speed down range that you claim. In fact vanes retain more speed down range as feather create more drag. Feathers are faster out to maybe the 20-30 yd range...but vanes have an edge after that.
Dri-fletch only lasts a few shots before you need to re-apply it...and it' s expensive!

If your vanes develop " memory" you can simple dip them in hot water to straighten them out.

I also have to believe that the shooters in this forum are not shooting off the shelf, but rather with some form of a rest. Those shooters would probably be posting in the " Traditional" forum.

All that being said...both have their advantages/disadvantages.
I suppose we' ll have to agree to disagree.