"It brought more strategy into the game"

I couldn't help noticing in this excellent Mike Stachura Golf World story on the OGA tournament ball, a pair money quotes:

"This ball could be pretty frustrating," said Matt Ries, who tied for seventh. "Iron shots seemed to roll out more. I think if we could get something that flew 10 to 20 percent less, but checked around the greens like balata, that might be a better test. It's definitely an equalizer, though."

The winner agreed. "The hardest part was adjusting to the release," said [Tournament winner Blake] Sattler. "It brought more strategy into the game."

Included with the story is a sidebar reporting on a preliminary USGA report on spin.

On August 11, the USGA sent an "interim report" to manufacturers on its research completed to date on spin generation--specifically, spin generated with irons.

Although the report states "no final conclusions have been reached and no proposals for rule changes are included," the results appear to indicate that U-shaped grooves may be in the USGA's crosshairs.

Now, the OGA ball situation may not have been perfect (it's hard to be comfortable with a ball that on discriminates against certain clubhead speeds).

However, a ball can be made that spins a little less, therefore promoting accuracy, thought and possibly restoring strategic value to a course.

Yet the USGA is looking to change the grooves on irons instead?

Which is more costly for golfers to replace. Balls or sets of irons?