All of them feature the company’s signature RifleScope alignment technology. Happy also focuses on alignment by offering a customizable design. Bloodline putters feature a unique weighting design that allows the putter to stand up on it’s own so you can get behind the ball and check your aim.
Putters with more forgiveness and stability like larger mallets typically provide superior distance control because they maintain consistent ball speed and roll even on mis-hits. Unless you’re exceptionally accurate with your contact point (repeatable impact in the center of the putterface) don’t fall overly in love with the more traditional head shapes.
Among those I’d start by looking at models from Bettinardi Evnroll SeeMore Happy and Bloodline. Each of these companies make high-quality products at varying price points. Furthermore they can perform exceptionally well provided you find one that fits your stroke eye and feel preference.