I orderd a Ultimate Inferno for heavy oil and I was thinking about trading it for a XXX-Factor and I'm glad I didn't. I had it drilled very agressive and polished for a strong back-end and man this baby hooks. I bowled two games at Orleans and I was standing 4 boards to left of where I usually stand and I was still slamming the pocket. Then I took it to my league at Gold Coast and I've been struggling there, under 600 for weeks, ave 225, and I shot 677 and I left 3 4-9's because the ball was coming back so hard. I left one 10 pin all night and not one 7 pin. I've seen this ball thrown box finish and it didn't do much so that's why I decided to polish it and wow, what a difference. Great ball Brunswick!!!