Chris,
FYI, I did careful testing of a range of chalks from "cheap" to "premium." The main conclusion of all of the testing was:
The brand of chalk doesn’t really matter much, unless you don’t chalk often or well enough, in which case the premium chalk might help; although, they can result in more-frequent cling.
For those interested, the full set of tests can be viewed in the following online video:
NV F.1 - Pool Chalk Experiment - Does the brand really make a difference?
And all of the results are concisely summarized in the following article that will appear in Billiards Digest soon:
"
Does the Brand of Chalk Really Matter?" (BD, July, 2015)
If you send me a cube or two of your Great White chalk (I would prefer blue so I can better see the chalk marks on the CB), I would be happy to put it through my tests, as I did for Magic Chalk on the
chalk comparison resource page. In case you want to do this, I'll PM you my mailing address.
Regards,
Dave
PS: Excellent thread.