In choosing a putter, you have to determine what appeals most to you in shape and size, what feels good, what helps you most in alignment, what delivers solid contact and accurate distance. Of course, a lot of what putting is all about is the golfer. No putter can read greens to determine break and speed. And no putter can execute proper alignment and speed. But for a club that is going to account for so many strokes per round, hooking up with the best putter for you should be a top priority.
First consideration is the shape of the putter.
Additionally, there are straight hosels, bent hosels and offset hosels to ponder. Finally, there is technology. Advances in research and design have brought numerous clubhead materials into play, such as carbon steel, copper, zinc, nickel, aluminum and so forth, along with styles such as face milling and inserts made from a variety of propietary materials. There's no one putter that is the best. Indeed, putters can, and should when possible, be custom fitted, just like the rest of the clubs in our bag.