I have a Herbie's Audio mat on my Garrard 301 and really like it (especially for the $). I am interested in some of the others, like the Boston carbon fiber, but they're super pricey. Would ove to hear from others on this.
What mat for aluminum
I have an acoustic signiture final tool TT. I have found that The Extreme Phono donut with fiber mesh and a Sumiko thin fiber cloth on top sounds best to me. I have tried The $100 paper mat. This combo brings out the details. Lets keep this discussion to metal platters.