I have played with Callaway's Diablo Octane Driver about 2 years, although I spend a long time to get use to it, PING G15 Driver because it is longer than the standard drivers, I have to say the Callaway Diablo Octane is the driver I ever used, it give me the most improvemtns, with the Diablo Octane Driver, my slice and hook are gone, now I can play a good golf. One of obvious improvements the Diablo Octane Driver give me is the increased distance, my avarage distance with my previous drivers is about 275 yardsm but now I can hit 290 yards, and some times I even can broke 300 yards, it is really fantastic. Callaway Diablo Edge Irons And the Diablo Octane Driver is light, but it is still very stronger, it also increase my swing speed. So excellent callaway drivers. The I put the Taylormade R11 irons to my bag, recently, I just play with them several rounds until now, discount golf equipment but I feel they are really perfect, I once played with Taylormade 's burner 2.0, I think the burner 2.0 are good enough, easy to control, accurate hits, and now I find the new R11 have a better performance than the R11 irons. The R11 have obvious wed precision weighting port which not only can guarantee the precise swing weight , but also ensure the center face center of gravity, TaylorMade R9 Driver then the R11 irons are able to provide the optimal consistency in feel and performance , so same excellent Taylormade R11 irons.