Oracle was very proud of their mat for the Premier Mark IV, which I have. But a Ringmat made a major improvement. With a Rega, you should get the thinnest Ringmat, unless you add a VTA adjuster. At least with some cartridges, the thicker Ringmat(s) would throw the VTA off and hurt the sound. I have a Rega 25 too, and use a Ringmat on it with excellent results. Rega and Ringmat are a famous combo, I think.
