Putting is such an individual preference and is as much about confidence as it is technique.

Putting is such an individual preference and is as much about confidence as it is technique. It can also be about how the putter looks to your eye. I personally prefer a blade style putter. I have used mallet styles in the past but always seem to come back to a blade.
However when asked I believe many beginners and higher handicap golfers would benefit more from a mallet style putter. They have a higher MOI, reduced twisting on miss hits and bigger sweet spot, than a traditional blade style. For better or worse it is easier for people to grasp the concept of taking the putter straight back and straight through with minimal face rotation.
More experienced players that understand and prefer the concept of releasing the putter head through impact would be better off with a blade style putter.
I am not saying mallet styled putters are only for beginners, look at how many Touring Professionals are using mallet putters, I just believe in the beginning they would be the easiest for most people to use.