I bought a 12 lbs Eraser Boost on E-bay last autumn - it was a second-hand ball but in excellent condition, so I had it drilled in my pro shop and have used it ever since. It is my first and only reactive (particle) ball and I find it totally convincing on medium to heavy oil conditions (it always hooks very nicely although I do not put a lot of revs on the ball - probably due to low speed). On oily lanes, it goes long, then suddenly hooks sharply and hits the pins quite hard. On dry conditions, however, it hooks too early and hitting the right pocket becomes nearly impossible, so I will probably buy a more suitable ball for those conditions soon.
All in all, I recommend the Eraser Boost as a rather aggressive ball for medium to heavy oil patterns.
