Ok let's start with the black widow pearl. The ball is designed to go farther than most balls down the lane, and have a serious backend demolishing the pins (if hitting the pocket). My BWP is drilled for maximum hook because I dont have a lot of natural spin or rev's. Suitable for all lane conditions.
Now with the black widow venom, very similar to the BWP in design and all, but it is designed to go mid ways down the lane with A LOT of hook. This ball does not work well on dry lane conditions. I would not recommend this one.
Black Widow Sting, this ball is not a pearl it's rather dull. It has almost the same movement as the black widow venom. But hammer claims its the most reactive widow up to date. Soo possibly it has a little more backend than the venom. I have never rolled it soo I dont know much about it.
Last but certainly not least the jigsaw, this ball is supposed to be the hooking ball of the century. On a scale to 60 this ball is supposed to have a hook potential of 60/60 which is good for high oil conditions but when the lane breaks down better find another ball.
Another reccomendation is from the line of roto grip, roto grip has a ball out by the name of the mars. It looks very similar to the black widow venom. and reacts a lot like the black widow pearl. I like this ball because it reacts like the pearl and is half the price.
But I might say the black widow pearl i have seen work better for most bowlers. At my bowling ally the Pro Shop
has recorded 32 300 games with this ball and they were not by the same person it was by a variety of people. In my opinion this is the ball.