Turntable Mats: Rubber, Felt or Cork.


I have a Linn Basik Turntable with an Akito tonearm and Rega Exacta 2 cartridge. Would one expect a noticeable sonic difference when changing from a felt mat to a rubber and cork mat?
joscow
I want to thank the many of you who have offered comments and/ or suggestions. I am proceeding to evaluate some of them.
@joscow,

If you decide to try MyMat, I'll give you a 25 percent discount on your second one, which be I'm sure you'll want.
It simply is one of the few mats I had to make some comparisons. Certainly, the OP should try other mats. Nowhere did I suggest that more expensive mats like the gunmetal suggested by Chakster would be inferior or not options. Thanks.


Good idea
@joscow,

I addition, I'm happy to provide contact info, and actually enjoy talking to fellow members.

Hearing from users is a joy and a way to improve a product, or add additional recommendations, if needed.
Sorry for the delay slaw. Ideally you want the record pinned to the mat over it's entire surface. Vacuum is the best but complicated. Next is the reflex clamp which I believe was first used by Walker. SME and Kuzma have followed suit. Having a SOTA and an SME I have experience with both systems. The reflex clamp uses a thin washer at the spindle under the record and contacts the record only at the edge of the label. This flexes the record down into the mat and removes minor irregularities. Vacuum will remove more pronounced irregularities. If you store your records correctly you will never have more than minor irregularities unless you buy used records that were stored poorly then I would definitely go for a vacuum table. 
What is the effect? Minor but obvious. I think it is because there is some movement of the record in the upper bass and changes in speed and VTA. The music sound more as if it is coming from a tape machine. With a good system the music hovers in air. This effect is improved by these hold down devices. As long as the mat is firm and acoustically inert any material will do. I would never buy a table without vacuum or a reflex clamp. IMHO SME has the best reflex clamp. I have not used a Kuzma.