Ringmat vs. Linn felt mat

I found that the mat offered by Extreme Phono offered significantly better sonics than the felt mat with my LP12.
I bought the standard and the donut mats to compare and, like the man said, the donut was better, if only slightly.

http://www.extremephono.com/Mat.htm

Interesting observation, Rcreations. I have the opposite experience -- the extreme donut mat sticks, the felt doesn't. Perhaps this is why my listening experience is opposite to yours?
I wonder if it has to do with the relative humidity? I'm in South Florida, where static is not a huge problem because of high relative humidity. Though there is less humidity indoors because of air conditioning, static is still not an issue most of the year, as in other areas of the country.
I guess I'll have to see what happens if we ever have winter again, when the relative humidity can drop and static electricity becomes noticeable. (We haven't had even a Florida winter the past couple of years. Global warming?)