would a nirvana be a good ball for a low speed low rev senior . I bowl on med heavy oil.I am looking for a ball for the fresh , then I use my old 2.5 c-system. Any help would be great.

For me, the Nirvana isn't nearly as early as a lot of heavier condition balls,  so, really, it depends on just how low your speed is. If you're really on the slower side, you may want to go with something cleaner up front so that the ball still has some energy left down the lane. Also, what part of the lane do you want to be able to play? That will influence what ball you should choose as well.

Nirvana with polish would work for ya.

I am a stroker I mostly play up the 7 to 12 board.Thanks for the replys.

I'm wondering if someone can give there opinion regarding drilling options for my Jackal Carnage. I am a down in in player, carry mid 205+ on a THS. I have always had my balls drilled with a long and strong layout. I am up the back and usually around 1st arrow. The house I bowl in say they use 25 units of oil 42 ft.. heavy oil in the center of the lane. When they start to break down and I move left and hit say 10 to 7 I start leaving the 2-4-5. I'm thinking about the midlane hook & backend drilling layout. I just don't want it to start rolling out or start leaving weak ten pins. Any help would be appreciated.