Ed,
I would suggest studying drill patterns and bowling angles that better compliment the game you are most comfortable with first. In other words try getting the most out of what you already have. However learning to adjust ball speed can be a valuable asset, but it takes time to get relaxed at it. Bottom line is lane condition, style of play, ball type (plastic,resin,particle), ball surface (dull,polished,sanded), and ball drill pattern all come before who manufactures the ball. Don't get me wrong some people have brands they find most favor in (myself included) I am just pointing out the more important factors. I personally try to find balls that fit more of a variety of styles. One's that aren't too condition specific or have over-under tendencies. For me that means more of a arcing reaction over skid snap (thus my screen name). The best way to do that is study the reviews both here and and in magazines. It's helped me tremendously. I am starting to get the most out of the equipment I purchase now because of it. Best wishes..high scores.