I got tired of missing so many spares with plastic and bought a super natural this week. 12 of 12 on ten pins in last 2 series. Plastic either went in gutter or completely whiffed left. Very little room for error with plastic. The urethane super natural gave me some miss right and also some miss left. Didn't over hook but still recovered enough to make the spares. I think I could also use this ball when lanes get burnt as my strike ball. Been awhile since I used urethane but I love the reaction so far.

Between 15 and 15 1/2.  I had my doubts too but I was proven wrong over the last week or so. It hooks early but doesn't over react. Gave me a lot more miss area when shooting spares.