I'm in the exact same situation as you are, except that I'm upgrading from the lower level r11, which is by far the oldest club in my bag. I love it to death, but just can't get enough distance out of it on some of the longer holes with elevated greens.
I'm very fond of my g10 irons, so the meter speed isn't a big issue. It's just a matter of trying to decide on the sometimes seemingly odd applications of precision and forgiveness. I haven't actually kept track of it, but I think that I would fall more towards the "just miss the ding more often than ding" side of things, so could anyone verify JaLa's assessment?