I am all for the Rossa too. Just shot a 26 with it at Oakmont. You need to learn it. It really does some weird things from time*** to time but it's a great putter. Since I have trouble dinging, I often don't try to. Instead, I aim closer in whichever direction and try pulling or pushing it. Only try to ding on straight putts. And yes, I tried others, sold them or never bought them. Look at the earnings leader this month and see what he is using... It's a great putter for the price.
*** Half the scale can go around 11-12 feet in Tournament or Champ greens but 1/4 inch more can leave you short of 12 in some putts. Others it just goes 15 or more.