I use a pair of Dark Thunders, one 5 x 4 1/2, pin over ring, cg slightly right and another 5 x 4 1/2 pin under bridge, cg slightly right and can use either on 80% of the conditions I face. Pin over ball is polished, pin under ball OOB at 1000 Matte for more oil and roll conditions. Smooth, hard hitting, versatile ball, I don't think you would be disappointed.