I purchased the i15 irons, 3 wood, and the Ping i15 Master driver. I couldn't be more elated. These clubs are great. I'm still trying to dial in the distances, and I can't say enough about the stopping power these clubs have. Now I know what I've been missing.
I already shaved 1 stroke off of my best 9 hole score (30), on the first day. I rented the R9 Super-Tri Master driver (210 Cr), and didn't care for it. It's not a very accurate driver. I also got three new Ping wedges, switching from the Taylormades, which had no accuracy whatsoever.
The game seems brand new all over again. Very fun. : )