Today spikeless is where it’s at — comfy performance-oriented models featuring multiple sole lugs rubber cleats and other exterior gripping surfaces that keep you rooted to the ground inside the ropes and bouncing confidently on errands around town.
There are differences however including most notably more adjustability in the form of Titleist’s SureFit CG technology that allows for more specific spin rate and launch angle tuning. The TS3 also features a more traditional pear shape and tends to produce more of a mid-launch as compared to the TS2’s higher launch.
If you prefer high-end milled putters then Bettinardi and Evnroll are good bets. SeeMore which is known largely due to Zach Johnson’s success (he grabbed the Green Jacket and Claret Jug with one) offers a wide array of designs.