Choosing a Putter requires some thought. There is an over-choice and it is easy to be swayed by marketing hype. Beware the buyer.
Putter Shapes – Three basic shapes to consider
Putter Types – A choice of standard, belly, or long putter
Cost – Cost should not be the most important criterion
Shafting – Where the shaft connects to the putter head
Alignment Aids – Help to square putterface to aimline
Inserts – There are several purposes for an insert
MOI – How easily the putterface twists on impact
Certainly it can help if your existing one is well past its use-by-date or ill-suited to your stroke, but don’t fool yourself into thinking that equipment is the full answer to excellence on the greens.