Update (after several hundred games, de-oiling and refinishing many times)
16# leveraged drilling, used primarily on long LONG/heavy oil w/ carrydown, wood lanes.
This Ball was amazing when new, but lost its' reaction very quickly. When I first purchased this ball it was a favorite, but my opinion dropped within a couple weeks of purchasing it, and it continues to decline. When visualizing this ball, picture a twirling Ballerina - graceful, dainty, and definitely high maintenance. This ball doesn't hit the pins, it dances gracefully through them leaving them miraculously standing in its wake. If a normal bowling ball hits like Mike Tyson, this mashmellow hits like Mr Rogers on prozac.
But be warned, you are not going to get that flacid Mr Rogers hit unless you are willing to devote HOURS a week to heavy maintenance. A weekly de-oiling in a bucket or dishwasher, followed by sanding and heavy cleaning will keep this ball performing like any other companies medium oil balls. If you are not willing to do this the ball is not going to do a damn thing for you.
I would hesitantly recommend this ball for medium conditions with the stipulation that the purchaser be willing to devote the time this lemon needs for maintenance. With that said, there are FAR better balls you can buy that will give you hundreds of games of consistent power without demanding this level of commitment. For comparison, I rolled this side by side with the Dynothane "Thing" (control drilling). The Thing, with this drilling, is intended for light/medium oil conditions. This particular Thing has about one hundred games on it yet has never been refinished, de-oiled, or sanded. Despite this, on heavy oil the "Thing" actually had a FAR stronger reaction, greater angle and total hook, and a significantly more powerful hit.
SUMMARY: If you want a good medium lanes ball the Freak will do it for you, but there are FAR better products out there. Consider them first.