What is the lime green disc you are putting with in the Throw Down The Mountain videos?
The Ringer GT and the Ringer are the shallowest rim and lowest profile putter I tried yet.
I was putting with a Jawbreaker Ringer GT last year. I tried other putters this winter but now I'm back with a Ringer but a Soft X Ringer, a tad less stable than the GT and without the thumbtack.