Summary: Have owned a G15 and K15 and both broke within a year right above the head, where the shaft and head meet. Ping repairs the clubs but that still leaves you without a driver for about 2 weeks. Very inconvenient. Other drivers last 10-15 years without breaking.
Summary: I almost quit this game due to troubles with my driver (TM Burner). While warming up to play on a Saturday I stumbled on a Ping Demo Day at the driving range. I demoed both the G15 and I15 in different lofts and shafts. After hitting 5 or 6 different combinations the pro suggested that I try the 12 degree G15. What an amazing club! I was hitting towering drives with a slight draw one after another.
Summary: Played a round of golf with some guys that swore by this club saying you couldn't hit it anywhere but straight. Boy were they right! I demoed many other drivers and kept coming back to this driver. I am able to draw or fade this driver if I want, but since this thing goes so straight, it takes a bit more exaggeration in your swing to get it to move. Haven't had this much confidence in my driver for years!
Summary: Looked around quite a while for a driver. Was playing the R9 460 and older Callaway Hyper X tour with fujikura optifit 360 shaft. Both were good with more than acceptable distance. Despite the good results, felt that they both had "quirkiness" I had to compensate for at setup/swing. Tried mant products like R11, R11S, Callaway Fit and the list goes on. In the end it was down to either the PingG15 or newer G20.
Summary: I just got my dad this driver while he was away on a bisness trip. He has good clubs but was lacking distance off the Tee box on longer holes. Previously, he felt the need to try and crush it to get any distance, which led to a bad slice or a hard hook. This club was the answer! He has a good, natural lift, so I got it in a 9 degree, to see if it would add distance. It worked! After he mishit a few balls, I convinced him not to try and kill it.