Mate the putter design to your natural stroke. If you are a pendulum putter, a forward (toward the face) center of gravity wants to open and close like a screen door and you’ll fight that type of design. If you are an open/closed stroke putter, the larger headed putter designs are not for you, nor are the large SuperStroke type of grips, which neutralize the open/closed action. With this in mind, choose whatever appeals to you. Personally, I like an Anser style without alignment aids, which only distract me, and a pistol grip. I have a gentle open/closed action, and the COG is not too deep, but back just enough so the face doesn’t try to roll open on longer strokes.