I Disagree with Wallshot on the Ambush. Mine is awesome on longer, heavier patterns, and the surface is 2000. Pin is 5 " from PAP, above fingers, with a small axis hole. And on house patterns, with crisp backend, the ball is anything but smooth. Very angular off the dry. My X-Factor Ace, pin above bridge, MB strong with a low hole and surface at 2000 is much smooth of a piece for me. It is very strong, just very smooth. I have to say the Venus would be an awesome choice. And you can't beat it at the price point.
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Buffalo bowlers are the best all around in the country.
AMF Thruway Lanes Pro Shop employee, and I have no problem saying that I'm Officially a Ball Junkie.