Considering the balls that you already have, I don't necessarily see why you have decided to get the saga. I would consider all three of these bowling balls to be of a similar mold. The main difference that I think that you'll see out of the saga is a bit more roll in the midlane. The ball really seems to rev a ton and count on its relatively weak cover to keep it online through the heads.
I would consider getting the Odyssey or some solid coverstock ball if I was in your position. Even if you only bowl in one house or on one general condition, there will be cartain variations from day to day. Making the asumption that you want either ebonite or roto grip, the overtime or the horizon solid seem to me to be better options. Though you may want to make surface changes. If you really want the Saga, I'd go with a completely different drill perhaps with the pin around 4" from the pap but only 1 1/2" above the midline, as I doubt that you have something like that and it will allow the ball to be early and relatively even with the proper mb placement.
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