walt harris has some good info on his site....
http://www.billiardsatlas.com/atlas.html
During the 2001 Las Vegas World Cup, many of the world?s best 3-C
player?s were surveyed on what cue tips they use, along with other
cue data.
It seems that most Belgium players stayed with tradition, which is to
use a smaller tip size, while most other top players use tip sizes bet-
ween 11.5 and 12.0 mm.
Name Tip Size
mm Tip
Make Type Shaft type
Bitalis 11.4 Mori Hard Extra Stiff
Blomdahl 12.0 Mori Medium Varies with table
Ceulemans 12.0 Triangle Medium Stiff
DeBacker 11.6 Mori Medium Medium Stiff
Dielis 9.5 Chandivert Hard Stiff
Habraken 11.0 LePro Medium Stiff
Jaspers 11.7 Mori Medium Stiff
Leppens 10.5 Mori Medium Extra Stiff
Piedrabuena 12.0 Mori Medium Medium Stiff
Sang Lee 12.0 Mori Medium Medium Stiff
Sayginer 12.0 Mori Medium Stiff
Theriaga 12.0 Mori Medium Stiff
Sanetti 12.0 Chandivert Medium Medium Stiff
While all were quizzed on their tip size and shaft configuration selections, Dick
Jaspers summed up this subject best by stating that the 12 mm size was best for
power shots, while the 11.5 size handled cue ball spin best---an 11.7 mm tip was
his selection.