The Challenger is an amazing overstable putter, and very popular with advanced players. It can get around trouble for those long hyzer putts and is overstable enough to take a good amount of snap on approaches.
I bought 1 ESP and 1 Titanium Challenger at max weight. They are both garbage discs. A Pro-D Challenger has more stability than a Titanium Challenger... How is this possible. I absolutely WOULD NOT recommend. Save your money and your game! Buy Pro-D.