... for a medium volume, 37-foot, typical house shot ?  Medium speed, medium revs. I am most comfortable playing from 13-17 board at the arrows to 8-12 at the break point.  

I have a Black Pearl which I really like- it's a little too strong for league, but its so good on longer/heavier tournament conditions that I leave the cover at that stronger condition (1000 grit sanded with light polish). When I tried higher grits and more polish i get too much over-under, so I just use it for longer/heavier oil.

Thanks in advance for your input.

i see pretty much the same conditions and play like you and i love the wcpp very smooth rolling ball

"for a medium volume, 37-foot, typical house shot ? Medium speed, medium revs."
- Terminator Rebellion

No question. Solid resin, medium RG, Medium RG Differential is the perfect ball.
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"None are so blind as those who will not see."