We were just talking about this at a tournament. I always would try putters out and finally now I have stuck with the Focus and am pretty happy with it. Over 5 years of playing I have tried a lot of putters.
(Started with) Aviar to Banger GT (soft and regular) to APX to Puttr to Challenger to Magic (tried S and SS and SSS) to Wizard (S, SS, SSS, Organic) to Ion (Soft Proton and Neutron) to Anode (Soft Proton and regular Proton) to Judge (soft and classic hard) and then finally landing on my Focus.
I think I finally found out I like beaded and thinner profile putters. My most consistent putters were the Magic, Ion, and the Focus. I did not like the Challenger, APX, Puttr, and Banger. Wizard and Anode were good but I was way to inconsistent with them.