Unless the mat is designed to do something specific in conjunction with the TT it was designed for (eg the Rega P9) then mats just vary tonality and the degree to which the music sounds live or damped.
There is no right or best mat - it's generally a case of trying a few and finding the one that strikes the best compromise.
Try the Funk, simple felt, cork and perhaps plain old synthetic rubber to get a feel for the differences.
Give a wide berth to anyone who states that his mat is groundbreaking or will transform your deck - no such thing exists and remember it's all been done before.