WOW! Now those are some REALLY conflicting reports!
Here is my experience...
I have my SA drilled with the pin over the bridge (probably 5"-5.5" from PAP) with the CG kicked to the right at about 4:30, weight on VAL below PAP.
OOB (2000 abralon, dull) this ball would read really early in the mids on both my normal house shot (medium oil, medium/long length) and sport league shot (long, medium oil), even with the weaker drilling I have on it, and would make a smooth, arcing motion to the pocket.
I left it at 2000 abralon but polished it with Reacta-Shine, which is supposed to be 1500 grit...so I figure its probably somewhere between 1500-2000 but polished. Now, my SA gets another 8-10 feet further down the lane before it starts reading and makes a stronger, more angular (not saying "true" angular motion but more angular than the arcing motion in OOB) move when it hits drier boards (still reads the mids well but makes a more pronounced but not jerky move when it finds friction)...overall it moves several more boards now than it did in OOB condition.
The combo of my SA and my T-Road Pearl are amazing! The R2S coverstock is awesome...Reactor coverstock on steroids!!!
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That which doesn't kill you will only make you stronger, that which doesn't make you stronger is a waste of time!