should of probably at least put an other in there. while the super pro is considered leather, its not as leather is cow hide and its buffalo as well as tiger's is a combination and icludes pig.
also the white diamond, some sort of resin compound, as well as canvas resin are both extreamly popular as well and both hold chalk infinatly better than phonelic while just as hard, if not harder.
theres also other materials out there being used such as cue ball as well as whatever that thing is that varney is using now.
but back on topic of the actual poll, i use the white diamond on my breaker and my jumper and i am very happy with it.