Soft Magnets..... I've had the same one in my bag for over four years now, my trusty goto putter in most situations. I have another one in the bag thats changed out pretty often with a new replacement, I like for this one to be brand new and stable so I can approach or drive off the pad with it and use it for windy putts too. If the wind is really howling I grab for a zone.
I like the soft magnets because I putt with a push putt style and really like the rebound they produce out of the hand from they're springy softness, plus sticking to the chains and wedging in the front of baskets from time to time aren't a bad thing either. lol