Hey Chip,
I have had just about every type of mat you can think of and I really do not think the mat makes much difference. I think you can prove this to yourself just going back and forth between your felt mat and no mat. Do use a record weight or clamp. I do hear a slight difference when certain types of record hold down systems are used such as vacuum hold down and the Walker/SME style system that uses a very thin shim at the spindle and a screw on record clamp that forces the record into the platter. I hear an improvement in mid bass definition.
As far as just a mat goes the felt is fine. If you see one that looks better to you and makes your turntable nicer looking that is fine. The only thing I can think of against felt mats is that if you do not have a dust cover they will collect dust whereas other mats you can just wipe off. Don't fall for the ridiculous marketing claims that come with most mats.
I have had just about every type of mat you can think of and I really do not think the mat makes much difference. I think you can prove this to yourself just going back and forth between your felt mat and no mat. Do use a record weight or clamp. I do hear a slight difference when certain types of record hold down systems are used such as vacuum hold down and the Walker/SME style system that uses a very thin shim at the spindle and a screw on record clamp that forces the record into the platter. I hear an improvement in mid bass definition.
As far as just a mat goes the felt is fine. If you see one that looks better to you and makes your turntable nicer looking that is fine. The only thing I can think of against felt mats is that if you do not have a dust cover they will collect dust whereas other mats you can just wipe off. Don't fall for the ridiculous marketing claims that come with most mats.