I have the True Blood and it goes straight mostly. I've used it on extremely scorched lanes a couple of times and the ball moves and hits the pocket nicely. But when there is oil it goes straight and you really can't expect more than that. I personally wish I got back into bowling in time to get the Taboo Spare because I like the coloration of it. Rainbow colors screw with people when they go down the lanes sometime lol. But my ProShop guy has both and he said they are the same in his opinion.
Hope that helps some.