PBaldwin: Even missing the ding these irons allow me to get inside 3-4 yards most of the time,
9-12 foot putts might be OK "most of the time" (what about the other times?) for you but shooting to a 3 foot circle yields a lot better results over the long run. Routinely using full back spin is counterproductive in that you're locked into a specific yardage range, one you've come to know but are restricted from adjusting to a large degree. That doesn't even address the deviations you get from the missed dings, both in distance and direction, because you put the deviation into turbo mode with that full back spin.
PBaldwin: while sometimes the tiny miss dings can be 5-10 yards off line, but those are just rounds I need to claw through and are not normal.
A "tiny ding miss," one I interpret as a pixel or 2, yielding a 5-10 yard off line result is a monumentally avoidable unforced error. This doesn't happen with no spin or a lesser ball and irons that forgive better than those R11's, which is what the Nikes do. And that is my point.