The love and hate of TM's product cycle gets a ton of play on here. A buddy of mine who is a club pro sent me this article from Golf WRX. I found it pretty interesting. I hope you all do to.
http://www.golfwrx.com/250147/how-taylormades-marketing-slayed-callaway-and-saved-golfers-money/
http://www.golfwrx.com/250147/how-taylormades-marketing-slayed-callaway-and-saved-golfers-money/