It depends... I won't recommend a product, but you should be aware that there are very different polish "technologies" around: gritless polishes /(like Lanemasters' polish) and rubbing compounds which contain sanding abrasives and sometimes waxes to yield a shiny finish.
IMHO, if you want true length, a gritless polish on a fine base grit is the way to go. The compounds offer, from my experience, more/earlier grit, and they are IMHO thwe products you should try out and experiment. Be aware that the underlying surface grit has influence on the reaction, so you might try different surfaces with polish before you come to a conclusive solution that suits your needs.
Personally, I have found 3M's Trizact rubbing compound to be a very good ball polish, if you want a comprimise between length and control. The stuff is actually not intended for bowling balls, rather for car bodies, to smooth out fine sanding lines in the 3.000 grit range. But it works very well on bowling balls and leaves a marble-like, VERY tacky surface, since it is a rubbing compound without any wax or silicone additive. You just get the pure ball cover - it has been my remedy when balls suffered from over/under reactions and sanding even at a fine grit made them read the lane and hook too early, while saving energy even on little oil in the heads.
Edited by dizzyfugu on 21.02.2011 at 0:57 AM