What's the best ferrule material?

[tofu]

What ferrule material is best as far as chalk residue, dirt, and scratch resistant?

 

[1-pocket-player]

Ivor-X IMHO

 

[sponge bob]

Hmm, I would say bone from an X President. Preferably that of Ronald Reagan

Asgar

 

[billiardbum]

Melamine, and Ivory is very good. Melamine is very hard, but what I put on all my cues.