After trying out a couple of putters Keystone became my choice. Bought this as my throwing putter. Unfortunately winter came so didn't have the chance to try it that much. But like the feel so far.
Real floaty putter. In opto plastic makes a great driving putter that holds shapes well. Also my first Ace disc. Always in my bag.
I love the keystone in Opto plastic. It flies great. More stable that all other keystones. It feels great, and can handle some torque for touch forehands. I hope they continue to produce these.